Aperture: Use prebuilt SDK version

Change-Id: Ib336cf26053340d7c8269926575b9b666049fd73
diff --git a/app/Android.bp b/app/Android.bp
index 6e8187d..d0925ff 100644
--- a/app/Android.bp
+++ b/app/Android.bp
@@ -16,7 +16,7 @@
     resource_dirs: ["src/main/res"],
     manifest: "src/main/AndroidManifest.xml",
 
-    sdk_version: "current",
+    sdk_version: "33",
     product_specific: true,
 
     static_libs: [