Clear caches older than 5 days (#8494)

.github/workflows/cleanup-cache.yml

@@ -1,19 +1,28 @@
 name: Cleanup cache
 
 on:
+  schedule:
+    - cron: "0 11 * * *"
   pull_request:
     types:
       - closed
 
-# Workflow copied from https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries
 jobs:
   cleanup:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
         uses: actions/checkout@v3
-        
-      - name: Cleanup
+
+      - name: Cleanup caches older than 5 days
+        if: github.event_name == 'schedule'
+        uses: MyAlbum/purge-cache@v2
+        with:
+          max-age: 432000
+
+      # https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries
+      - name: Cleanup on PR close
+        if: github.event_name == 'pull_request'
         run: |
           gh extension install actions/gh-actions-cache