What type of PR is this?

/kind bug

What this PR does / Why we need it:

This PR updates the post_cloudbuild.yaml script to ensure that release build and push uses the correct version string and skips the development suffix.

Specifically, it changes how VERSION and FULL_BUILD are passed to the make-docker steps. By moving these from environment variables to explicit command-line arguments, we force the Makefile to use the provided release version (e.g., 1.55.0).

Previously, the Makefile was defaulting to a development version string (e.g., 1.55.0-dev-1b1c538) during the push-images step. The Cloud Build would fail, because the push-images step looked for development tags that did not match the release image tags correctly created in the previous build step.

Cloud Build push-images log:

Step #5 - "push-images": docker buildx use arm64-builder || docker buildx create --name arm64-builder --use
Step #5 - "push-images": docker buildx build --platform linux/arm64 --builder arm64-builder --build-arg ARCH=arm64 /workspace/cmd/controller/ --tag=us-docker.pkg.dev/agones-images/release/agones-controller:1.55.0-dev-1b1c538-arm64 --push
...
Step #5 - "push-images": docker buildx imagetools create --tag us-docker.pkg.dev/agones-images/release/agones-controller:1.55.0 us-docker.pkg.dev/agones-images/release/agones-controller:1.55.0-amd64 us-docker.pkg.dev/agones-images/release/agones-controller:1.55.0-arm64
Step #5 - "push-images": ERROR: us-docker.pkg.dev/agones-images/release/agones-controller:1.55.0-arm64: not found

Which issue(s) this PR fixes:

NA

Special notes for your reviewer:

Even though the push-images step was the failing step, I updated for all build-images, push-images, and push-chart steps for consistency.