Bump actions/stale from 7 to 8 (#4329)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alan West <3676547+alanwest@users.noreply.github.com>
Co-authored-by: Utkarsh Umesan Pillai <utpilla@microsoft.com>

.github/workflows/stale.yml

@@ -10,7 +10,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v7
+      - uses: actions/stale@v8
         with:
           stale-pr-message: 'This PR was marked stale due to lack of activity and will be closed in 7 days. Commenting or Pushing will instruct the bot to automatically remove the label. This bot runs once per day.'
           close-pr-message: 'Closed as inactive. Feel free to reopen if this PR is still being worked on.'