.github/labeler-no-sync: add backport label to action changes (#435926)

Changed files
+1
.github
+1
.github/labeler-no-sync.yml
···
- any:
- changed-files:
- any-glob-to-any-file:
- .github/workflows/*
- ci/**/*.*
···
- any:
- changed-files:
- any-glob-to-any-file:
+
- .github/actions/*
- .github/workflows/*
- ci/**/*.*