Bump actions/stale from 9 to 10

Bumps [actions/stale](https://github.com/actions/stale) from 9 to 10.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/stale/compare/v9...v10)

---
updated-dependencies:
- dependency-name: actions/stale
  dependency-version: '10'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/stale.yml

@@ -14,7 +14,7 @@ jobs:
     if: github.repository_owner == 'qgis'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/stale@v9
+    - uses: actions/stale@v10
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-pr-message: >