Release Checklist #573
Description
### Tasks
- [x] Resolve outstanding PR on release process: ~~https://github.com/nginxinc/nginx-kubernetes-gateway/pull/219~~ . New PR https://github.com/nginxinc/nginx-kubernetes-gateway/pull/585
- [x] Manual changelog
- [x] Update changelog automation to pick up new labels
- [x] Update image tag version in manifests
- [x] Cut a release branch
- [x] Sanity tests -> run through examples and make sure they work
- [x] Release!