Update stale config
Update stale config

- Changes the stale label from `wontfix` to `stale ⏳`
- Applies stale only to issues, not to pull requests
- Adds exemptions for issues linked to projects and milestones
Eitot/vienna-rss,josh64x2/vienna-rss,barijaona/vienna-rss,josh64x2/vienna-rss,ViennaRSS/vienna-rss,josh64x2/vienna-rss,ViennaRSS/vienna-rss,barijaona/vienna-rss,Eitot/vienna-rss,josh64x2/vienna-rss,josh64x2/vienna-rss,Eitot/vienna-rss,ViennaRSS/vienna-rss,barijaona/vienna-rss,barijaona/vienna-rss,Eitot/vienna-rss,barijaona/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss