Update stale.yml

exempt-issue-labels: 'no-stale' added

Author: kakopappa

.github/workflows/stale.yml

@@ -30,3 +30,4 @@ jobs:
           days-before-close: 7
           days-before-pr-stale: -1
           days-before-pr-close: -1
+          exempt-issue-labels: 'no-stale'