chore: run deletion on merge to default branch (#12)

Author: pranc1ngpegasus

.github/workflows/cache.yaml

@@ -1,7 +1,8 @@
 name: Cache
 on:
-  schedule:
-    - cron: "0 0 * * *"
+  push:
+    branches:
+      - main
   workflow_dispatch:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-cache