🤖 Update actions/github-script action to v9 (#18)

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

Author: renovate[bot]

.github/workflows/enforce_pr_title.yml

@@ -20,7 +20,7 @@ jobs:
       - id: enforce_title
         name: Set PR title to branch name
         if: github.event.pull_request.title != github.event.pull_request.head.ref
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             await github.rest.pulls.update({