Adjust stale bot settings to be more user friendly

Author: LKaemmerling

.github/workflows/bot_stale.yml

@@ -15,5 +15,5 @@ jobs:
           stale-pr-message: 'This PR has been marked as stale because it has not had recent activity. The bot will close the PR if no further action occurs.'
           exempt-pr-label: 'pinned'
           stale-pr-label: 'stale'
-          days-before-stale: 30
-          days-before-close: 5
+          days-before-stale: 90
+          days-before-close: 30