Bump gcs version in seed

Author: tuliren

airbyte-config/init/src/main/resources/seed/destination_definitions.yaml

@@ -60,7 +60,7 @@
 - name: Google Cloud Storage (GCS)
   destinationDefinitionId: ca8f6566-e555-4b40-943a-545bf123117a
   dockerRepository: airbyte/destination-gcs
-  dockerImageTag: 0.1.20
+  dockerImageTag: 0.1.21
   documentationUrl: https://docs.airbyte.io/integrations/destinations/gcs
   icon: googlecloudstorage.svg
 - name: Google Firestore

airbyte-config/init/src/main/resources/seed/destination_specs.yaml

@@ -1162,7 +1162,7 @@
     - "overwrite"
     - "append"
     supportsNamespaces: true
-- dockerImage: "airbyte/destination-gcs:0.1.20"
+- dockerImage: "airbyte/destination-gcs:0.1.21"
   spec:
     documentationUrl: "https://docs.airbyte.io/integrations/destinations/gcs"
     connectionSpecification: