Automatically format YAML, CSS, and JS files (#1272)

Initially, I also formatted the templates in `theme/`, but this triggers
https://github.com/prettier/prettier/issues/11834. So I exclude them for
now.

---------

Co-authored-by: Ming-Ying Chung <mych@chromium.org>

.github/labeler.yml

@@ -1,51 +1,50 @@
 translation:
-- po/**
+  - po/**
 
-'translation/bn':
-- po/bn.po
+"translation/bn":
+  - po/bn.po
 
-'translation/da':
-- po/da.po
+"translation/da":
+  - po/da.po
 
-'translation/de':
-- po/de.po
+"translation/de":
+  - po/de.po
 
-'translation/el':
-- po/el.po
+"translation/el":
+  - po/el.po
 
-'translation/es':
-- po/es.po
+"translation/es":
+  - po/es.po
 
-'translation/fr':
-- po/fr.po
+"translation/fr":
+  - po/fr.po
 
-'translation/id':
-- po/id.po
+"translation/id":
+  - po/id.po
 
-'translation/it':
-- po/it.po
+"translation/it":
+  - po/it.po
 
-'translation/ja':
-- po/ja.po
+"translation/ja":
+  - po/ja.po
 
-'translation/ko':
-- po/ko.po
+"translation/ko":
+  - po/ko.po
 
-'translation/pt-BR':
-- po/pt-BR.po
+"translation/pt-BR":
+  - po/pt-BR.po
 
-'translation/ru':
-- po/ru.po
+"translation/ru":
+  - po/ru.po
 
-'translation/tr':
-- po/tr.po
+"translation/tr":
+  - po/tr.po
 
-'translation/zh-CN':
-- po/zh-CN.po
+"translation/zh-CN":
+  - po/zh-CN.po
 
-'translation/zh-TW':
-- po/zh-TW.po
+"translation/zh-TW":
+  - po/zh-TW.po
 
-
-'translation/fa':
-- po/fa.po
+"translation/fa":
+  - po/fa.po

.github/workflows/labeler.yml

@@ -1,6 +1,6 @@
 name: "Pull Request Labeler"
 on:
-- pull_request_target
+  - pull_request_target
 
 jobs:
   triage:
@@ -9,6 +9,6 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/labeler@v4
-      with:
-        sync-labels: true
+      - uses: actions/labeler@v4
+        with:
+          sync-labels: true