file path corrected

Author: ankitsingh2105

.github/workflows/removeOldMocks.yml

@@ -30,5 +30,5 @@ jobs:
         env:
           MONGO_URI: ${{ secrets.MONGO_URI }}
           # Inject MongoDB connection string securely from GitHub Secrets
-        run: node cleanup.js
+        run: node Backend/cleanup.js
         # Runs the cleanup.js script to delete old mocks