Preparation for Release v1.47.0

[0xaravindh]

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:

Closes #4076

Special notes for your reviewer:

[igooch]

One more update in versionMap.yaml ReleaseVersion: "1.45.0" to ReleaseVersion: "1.46.0".

Also please update the cloudbuild.yaml _BASE_VERSION: 1.46.0 to _BASE_VERSION: 1.47.0 and test/upgrade/Dockerfile base_version = 1.46.0 to base_version = 1.47.0 (not currently in the instructions -- those will need to get added in.)

[agones-bot]

Build Failed 😭

Build Id: 6ed4cd78-9b4e-44c7-a303-3e32656107ac

Status: FAILURE

• Cloud Build view
• Cloud Build log download

To get permission to view the Cloud Build view, join the agones-discuss Google Group.

[agones-bot]

Build Succeeded 🥳

Build Id: e4643a45-4d38-4616-9a2e-85b8578f2b77

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:1.47.0-dev-955e935
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.47.0-dev-955e935
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.47.0-dev-955e935-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.47.0-dev-955e935
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.47.0-dev-955e935
• Linux C++ SDK (build): agonessdk-1.47.0-dev-955e935-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.47.0-dev-955e935.zip

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

• https://955e935-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4079/head:pr_4079 && git checkout pr_4079
helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.47.0-dev-955e935

[igooch]

LGTM