Fix Docker Image Cache References to Not Use Platform

[timnolte]

Issue

The published images don't actually have a platform tag so attempting to use a tag of the format php-8.3-node-18-amd64 will never return an image that can be leveraged for layer caches.

Change to Be Made

The Dev Container build action may need to be changed to not include the platform in the tag.

https://github.com/ndigitals/wp-dev-container/blob/develop/.github/workflows/release-build.yml#L91