Add build args to create release GH action and use it in medical dashboard

[cheyer]

All services, like e.g. the data graph, use the shared create release GH action in our .github repo:

create-release:
    name: Create Release
    needs: merge-release-pr
    uses: dot-base/.github/.github/workflows/create-release.yml@master
    secrets:
      GH_BOT_PAT: ${{ secrets.GH_BOT_PAT }}
      CR_PAT: ${{ secrets.CR_PAT }}

The medical dashboard is not using the shared GH action, as it needs the FONTAWESOME_NPM_AUTH_TOKEN env variable and sets it as a docker build arg.

Goal of this ticket is to investigate, if we can change the shared GH action to also handle additional optional docker build args, so we can use the shared GH action also in the medical dashboard.