Release triggered by tags instead of release

[vv-monsalve]

@simoncozens this PR changes the release condition to be triggered by the tags instead. Please let me know if this would be enough or if something else would be needed here :)

[simoncozens]

It would also need to create the release. From the googlefonts-project-template:

      - name: Check for release
        id: create_release
        run: |
          if ! gh release view ${{ github.ref_name }}; then
          git show -s --format=%B ${{ github.ref_name }} | tail -n +4 | gh release create ${{ github.ref_name }} -t ${{ github.ref_name }} -F -
          fi

[vv-monsalve]

Updated!

[vv-monsalve]

Ty!