Update stale to 90 days

Author: easingthemes

.github/workflows/stale.yml

@@ -21,6 +21,6 @@ jobs:
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.'
-        days-before-stale: 30
-        days-before-close: 5
+        days-before-stale: 90
+        days-before-close: 15
         stale-issue-label: 'stale'