chore(deps): 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](actions/stale@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>

Author: dependabot[bot]

.github/workflows/maintenance.yml

@@ -179,7 +179,7 @@ jobs:
       # Marquer les issues sans activité depuis 60 jours comme "stale"
       # et les fermer automatiquement après 7 jours supplémentaires
       - name: Gérer les issues et PR inactives
-        uses: actions/stale@v9
+        uses: actions/stale@v10
         with:
           # ── Issues ──────────────────────────────────────────
           # Marquer comme stale après 60 jours d'inactivité