New versions of `fpm` and `gcc/gfortran`

[praynaud]

The current version of fpm is 0.9.0, released on Jun 2, 2023.

gcc and gfortran are now up to version 13 (13.2 as of 09/12/2023).

Could you update this very useful installer to reflect these newer versions for Windows?

Also, any idea how to use this in GitHub Actions?