Bump actions/stale from 4 to 7 (#1737)

Author: dependabot[bot]

.github/workflows/stale.yml

@@ -13,7 +13,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v4
+      - uses: actions/stale@v7
         with:
           stale-issue-message: 'This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 5 days.'
           days-before-stale: 45