Update the K8S version upgrade template to include OKE

[kamaljeeti]

What type of PR is this?

Uncomment only one /kind <> line, press enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking
/kind bug
/kind cleanup

/kind documentation

/kind feature
/kind hotfix
/kind release

What this PR does / Why we need it:

Which issue(s) this PR fixes:#4038

Closes #4038

Special notes for your reviewer:

[agones-bot]

Build Succeeded 🥳

Build Id: 5035fc16-299c-4691-bc9b-4729dd39181b

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.46.0-dev-ebc9cca
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.46.0-dev-ebc9cca
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.46.0-dev-ebc9cca-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.46.0-dev-ebc9cca
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.46.0-dev-ebc9cca
• Linux C++ SDK (build): agonessdk-1.46.0-dev-ebc9cca-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.46.0-dev-ebc9cca.zip

A preview of the website (the last 30 builds are retained):

• https://ebc9cca-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4068/head:pr_4068 && git checkout pr_4068
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.46.0-dev-ebc9cca

[gongmax]

Ivy had a comment on #4068 about refactor the code structure. Can you create an issue to track it separately? Thanks

[gongmax]

Suggested change

	- [ ] Update the OKE example cluster version to 1.30
	- [ ] Update the OKE example cluster version to the newest supported version in {version_1} {version_2} {version_3}. Note the version should include the patch version.