Update clean-cache.yml

Author: mayeut

.github/workflows/clean-cache.yml

@@ -17,7 +17,8 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
-  deploy:
+  cleanup:
+    if: github.repository == 'pypa/manylinux'
     name: Clean image cache
     runs-on: ubuntu-latest
     permissions: