Update K8s images in base to v6.9.391

Author: DaedalusG

base/sourcegraph/worker/worker.Deployment.yaml

@@ -48,7 +48,7 @@ spec:
                   fieldPath: status.hostIP
             - name: OTEL_EXPORTER_OTLP_ENDPOINT
               value: http://$(OTEL_AGENT_HOST):4317
-          image: index.docker.io/sourcegraph/worker:6.2.1106@sha256:fd6be67ea22f842246dbe81f64a60db027e5202f0ce863a0be4a82b12f908620
+          image: us-docker.pkg.dev/sourcegraph-images/internal/worker:6.9.391@sha256:688ecad3ab7488e2e7b049b6977a5993d1eef99fb94f31ec67ac1a418db8d6da
           terminationMessagePolicy: FallbackToLogsOnError
           livenessProbe:
             httpGet: