GKE clusters using the Network Policy feature and Pods specifying a hostPort might have experienced networking connectivity issues after control plane upgrades

## Fix GKE clusters using [the Network Policy feature](https://cloud.google.com/kubernetes-engine/docs/how-to/network-policy) and Pods specifying a [hostPort](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.30/#container-v1-core) might have experienced networking connectivity issues after control plane upgrades. As a precaution, GKE disabled auto-upgrades for potentially impacted clusters. The following GKE versions contain a fix for this issue and are safe to manually upgrade to: * 1.27.16-gke.1342000 or later * 1.28.13-gke.1078000 or later * 1.29.8-gke.1157000 or later * 1.30.4-gke.1282000 or later * 1.31 or later GKE control plane upgrades are now resumed and clusters will be auto-upgraded when the patch version becomes an auto-upgrade target for your clusters, honoring maintenance windows and exclusions.