fix: add ac claim for old docker/build-push-action@v3 and make buildx gha cache work

[ChristopherHX]

Also resolves a warning for current releases

| ##[group]GitHub Actions runtime token ACs
| ##[warning]Cannot parse GitHub Actions Runtime Token ACs: "undefined" is not valid JSON
| ##[endgroup]
====>
| ##[group]GitHub Actions runtime token ACs
| ##[endgroup]

also cache now works if run via --interactive or enabling sqlite persistence

on:
  push:
  
jobs:
  docker:
    runs-on: self-hosted
    permissions:
      contents: read
      packages: write
    steps:
    - uses: actions/checkout@v3
    -
      name: Set up QEMU
      uses: docker/setup-qemu-action@v2
    -
      name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2
    -
    - run: |
        echo "LOWNER<<EOF23" >> $GITHUB_ENV
        echo $(echo "$OWNER" | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
        echo "EOF23" >> $GITHUB_ENV        
      shell: bash
      env:
        OWNER: ${{github.repository_owner}}
    -
      name: Build and push
      uses: docker/build-push-action@v5
      with:
        context: .
        file: Dockerfile
        platforms: linux/amd64
        load: true
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: test:test