Changes upgrades clusters to use only us based regions

[igooch]

What type of PR is this?

/kind cleanup

What this PR does / Why we need it:

Updates upgrades clusters to use only US-based regions.

Which issue(s) this PR fixes:

NA

Special notes for your reviewer:

[agones-bot]

Build Succeeded 🥳

Build Id: 897800ef-e027-43bd-8b4d-35a97a74b68b

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-7c2f8d3
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.46.0-dev-7c2f8d3
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.46.0-dev-7c2f8d3-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.46.0-dev-7c2f8d3
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.46.0-dev-7c2f8d3
• Linux C++ SDK (build): agonessdk-1.46.0-dev-7c2f8d3-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.46.0-dev-7c2f8d3.zip

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

• https://7c2f8d3-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4046/head:pr_4046 && git checkout pr_4046
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-7c2f8d3

[agones-bot]

Build Succeeded 🥳

Build Id: 7e9e69eb-3df6-49ad-ba9f-b733d03dcb3e

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-48f9645
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.46.0-dev-48f9645
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.46.0-dev-48f9645-linux
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.46.0-dev-48f9645
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.46.0-dev-48f9645
• Linux C++ SDK (build): agonessdk-1.46.0-dev-48f9645-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.46.0-dev-48f9645.zip

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

• https://48f9645-dot-preview-dot-agones-images.appspot.com/

To install this version:

git fetch https://github.com/googleforgames/agones.git pull/4046/head:pr_4046 && git checkout pr_4046
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-48f9645