chore: fix python error

Author: rjaegers

.github/workflows/wc-build-push.yml

@@ -135,7 +135,7 @@ jobs:
           import json
           import subprocess
 
-          CONTAINER = f"{os.getenv('REGISTRY')}/${{ github.repository }}-{os.getenv('CONTAINER_FLAVOR')}"'
+          CONTAINER = f"{os.getenv('REGISTRY')}/${{ github.repository }}-{os.getenv('CONTAINER_FLAVOR')}"
           METADATA = json.loads('${METADATA_JSON}')
 
           digests = [f for f in os.listdir('.') if f.startswith('sha256:') or len(f) == 64]