Move GitHub Actions for ARM for separate file

- We will include these long running jobs only on special branches

.github/workflows/test-latest-container-images.yaml

@@ -12,9 +12,6 @@ jobs:
           - apache
           - fpm-alpine
           - fpm
-        platform:
-          - linux/amd64
-          - linux/arm64
     steps:
       - name: 'Check out the repo'
         uses: actions/checkout@v3
@@ -34,7 +31,6 @@ jobs:
           push: false
           load: true
           tags: docker.io/martialblog/limesurvey:6-${{ matrix.context }}
-          platforms: ${{ matrix.platform }}
 
       - name: 'Run Structure tests'
         uses: plexsystems/container-structure-test-action@v0.2.0