Update Helm chart images in k8s to v7.3.0

Author: sourcegraph-bot-2

charts/sourcegraph-executor/k8s/values.yaml

@@ -8,7 +8,7 @@ sourcegraph:
     # -- Global docker image pull policy
     pullPolicy: IfNotPresent
     # -- Global docker image registry or prefix
-    repository: us-docker.pkg.dev/sourcegraph-images/internal
+    repository: index.docker.io/sourcegraph
     # -- When set to true, sourcegraph.image.defaultTag is used as the default defaultTag for all services, instead of service-specific default defaultTags
     useGlobalTagAsDefault: false
   # -- Mount named secrets containing docker credentials