Use "main" branch of LUCI's CIPD package

The "master" branch is obsolete and no longer updated,
so it does not reflect the most recent code changes.

Test: Run tools/luci/config/main.star
Change-Id: Ie67ecabf677c63e6768d8420af20dc1c25b0bf52
diff --git a/tools/luci/config/generated/cr-buildbucket.cfg b/tools/luci/config/generated/cr-buildbucket.cfg
index d49b81d..e4a5923 100644
--- a/tools/luci/config/generated/cr-buildbucket.cfg
+++ b/tools/luci/config/generated/cr-buildbucket.cfg
@@ -22,7 +22,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -46,7 +46,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -70,7 +70,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -94,7 +94,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -118,7 +118,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -142,7 +142,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -166,7 +166,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -190,7 +190,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -214,7 +214,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -238,7 +238,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -262,7 +262,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -286,7 +286,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -310,7 +310,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -334,7 +334,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -358,7 +358,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -382,7 +382,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -406,7 +406,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -430,7 +430,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -454,7 +454,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -478,7 +478,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -502,7 +502,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -526,7 +526,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -550,7 +550,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -574,7 +574,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
@@ -598,7 +598,7 @@
       recipe {
         name: "art"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
-        cipd_version: "refs/heads/master"
+        cipd_version: "refs/heads/main"
         properties_j: "builder_group:\"client.art\""
       }
       execution_timeout_secs: 108000
diff --git a/tools/luci/config/main.star b/tools/luci/config/main.star
index ec1c88e..f4ad488 100755
--- a/tools/luci/config/main.star
+++ b/tools/luci/config/main.star
@@ -153,7 +153,7 @@
         bucket = "ci",
         executable = luci.recipe(
             cipd_package = "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build",
-            cipd_version = "refs/heads/master",
+            cipd_version = "refs/heads/main",
             name = "art",
         ),
         dimensions = {