chore(deps): update actions/stale action to v9

Author: renovate[bot]

.github/workflows/stale.yml

@@ -12,7 +12,7 @@ jobs:
     if: github.repository_owner == 'ory'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v4
+      - uses: actions/stale@v9
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-issue-message: |