Restrict stalebot on projects & milestones (#6498)

Closes #6497

Author: max-sixty

.github/stale.yml

@@ -14,10 +14,10 @@ exemptLabels:
   - "[Status] Maybe Later"
 
 # Set to true to ignore issues in a project (defaults to false)
-exemptProjects: false
+exemptProjects: true
 
 # Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: false
+exemptMilestones: true
 
 # Set to true to ignore issues with an assignee (defaults to false)
 exemptAssignees: true