Bump actions/stale from 1.1.1 to 9.0.0 (#489)

Bumps [actions/stale](https://github.com/actions/stale) from 1.1.1 to 9.0.0.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](actions/stale@0649bd8...28ca103)

---
updated-dependencies:
- dependency-name: actions/stale
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/stale.yml

@@ -21,7 +21,7 @@ jobs:
       with:
         egress-policy: audit
 
-    - uses: actions/stale@0649bd81195b7ac109fbf9dde113af7e58a78b8e # v1.1.1
+    - uses: actions/stale@28ca1036281a5e5922ead5184a1bbf96e5fc984e # v9.0.0
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'Stale issue message'