update base image

Author: pnilan

airbyte-integrations/connectors/source-sendgrid/metadata.yaml

@@ -6,7 +6,7 @@ data:
     hosts:
       - api.sendgrid.com
   connectorBuildOptions:
-    baseImage: docker.io/airbyte/source-declarative-manifest:6.38.3@sha256:fcba02266f262aabc2f37e4f14574aa1c8c5cffd018504bab28803e405c93afe
+    baseImage: docker.io/airbyte/source-declarative-manifest:6.39.3@sha256:ff59661ef3ad9e87da0ff35c36230acb138a5fb0900608b61449bef25d5ebc7b
   connectorSubtype: api
   connectorType: source
   definitionId: fbb5fbe2-16ad-4cf4-af7d-ff9d9c316c87