Close incomplete issues after 60 days.

This has been proven as useful in Launchpad
https://help.launchpad.net/BugExpiry

.github/workflows/stale.yml

@@ -1,6 +1,6 @@
 # yaml-language-server: $schema=https://json.schemastore.org/github-workflow
 
-name: "Detect stale issues"
+name: "Detect stale issues and pull request"
 on:
   schedule:
     - cron: "0 0 * * *"
@@ -18,10 +18,13 @@ jobs:
       - uses: actions/stale@v6
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-          stale-issue-message: "This issue is marked as stale because it has been open 90 days with no activity."
-          stale-issue-label: "stale"
           stale-pr-message: "This PR is marked as stale because it has been open 90 days with no activity."
           stale-pr-label: "stale"
-          days-before-stale: 90
-          days-before-close: -1
+          days-before-pr-stale: 90
+          days-before-pr-close: -1
           exempt-pr-labels: "needs review"
+          close-issue-message: "Expired for Mixxx because there has been no activity for 60 days."
+          stale-issue-label: "stale"
+          days-before-issue-stale: 60
+          days-before-issue-close: 0
+          only-issue-labels: "incomplete"