chore(ci): add PR files guard action; (#6890)

.github/workflows/labeler.yml

@@ -14,6 +14,13 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: git config
+        run: |
+          git config user.name "${GITHUB_ACTOR}"
+          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
       - name: Set PR number
         id: set-pr
         run: |