fpm v0.12 broken with latest

[scivision]

Similar to #37

    - uses: fortran-lang/setup-fpm@v5
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}

Run fortran-lang/setup-fpm@v5
fpm-version: latest
fpm-repository: https://github.com/fortran-lang/fpm
This platform is linux
Fetching fpm from https://github.com/fortran-lang/fpm/releases/download/v0.12.0/fpm-0.12.0-linux-x86_64
Error: Error while trying to fetch fpm - please check that a version exists at the above release url.
undefined
Error: The "path" argument must be of type string. Received undefined

[scivision]

Oops, Readme.md should be updated to recommend setup-fpm@v7

[perazz]

Thank you for your patch @scivision.