Add 'maintainer action required' label to stale check (#2278)

Author: cmccandless

.github/workflows/stale.yml

@@ -13,7 +13,7 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-stale: 21
           days-before-close: 7
-          exempt-issue-labels: 'discussion,pinned,epic,enhancement,beginner friendly'
+          exempt-issue-labels: 'discussion,pinned,epic,enhancement,beginner friendly,maintainer action required'
           stale-issue-label: abandoned
           stale-issue-message: >
             This issue has been automatically marked as `abandoned`
@@ -23,7 +23,7 @@ jobs:
           close-issue-message: >
             Closing stale issue. If this issue is still relevant,
             please reopen it.
-          exempt-pr-labels: 'pinned,enhancement,awaiting review'
+          exempt-pr-labels: 'pinned,enhancement,awaiting review,maintainer action required'
           stale-pr-label: abandoned
           stale-pr-message: >
             This pull request has been automatically marked as `abandoned`