crowdin.yaml: Support Luxembourgish
diff --git a/crowdin.yaml b/crowdin.yaml
index b891038..aa2d618 100644
--- a/crowdin.yaml
+++ b/crowdin.yaml
@@ -57,6 +57,7 @@
         km: km
         ko: ko
         ku: ku
+        lb: lb
         lo: lo
         lt: lt
         lv: lv