Update stale.yml

Don't mark PRs as stale until 30 days after last activity and never close PRs automatically.

.github/workflows/stale.yml

@@ -12,17 +12,19 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-stale: 7
           days-before-close: 2
+          days-before-pr-stale: 30
+          days-before-pr-close: -1
           stale-issue-message: >
-            This issue has been automatically marked as stale because it has not had
-            recent activity. It will be closed in two days if no further activity
-            occurs. Thank you for your contributions! :+1:
+            This issue has been automatically marked as stale because it has
+            not had recent activity. It will be closed in two days if no
+            further activity occurs. Thank you for your contributions! :+1:
           stale-pr-message: >
-            This pull request has been automatically marked as stale because it has not had
-            recent activity. It will be closed in two days if no further activity
-            occurs. Thank you for your contributions! :+1:
+            This pull request has been automatically marked as stale because
+            it has not had recent activity. Pull requests won't be closed
+            automatically though. Please consider whether and how the work
+            can be merged into Pico. Thank you for your contributions! :+1:
           stale-pr-label: "info: Stale"
           stale-issue-label: "info: Stale"
           exempt-issue-labels: "type: Bug,type: Enhancement,type: Feature,type: Idea,type: Release,info: Pinned"
-          exempt-pr-labels: "type: Bug,type: Enhancement,type: Feature,type: Idea,type: Release,info: Pinned"
+          exempt-pr-labels: "type: Release,info: Pinned"
           remove-stale-when-updated: true
-