Exclude enhancement and bug issues

Author: wtdcode

.github/workflows/stale.yml

@@ -14,5 +14,5 @@ jobs:
           days-before-stale: 60
           days-before-close: 15
           exempt-all-milestones: true
-          exempt-issue-labels: 'pinned,help wanted'
+          exempt-issue-labels: 'pinned,help wanted,enhancement,bug'
           exempt-pr-labels: 'pinned'