Update actions/github-script action to v9 (#26605)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/label-lts-prs.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Check if PR targets LTS branch
         if: startsWith(github.event.pull_request.base.ref, 'stable-')
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |