net/mpifx: upgrade to a recent commit in order to support MPICH-4.x

mpifx does not build with MPICH-4.x:
see https://github.com/dftbplus/mpifx/issues/48.

A fix for this issue has been committed, but nothing has been released yet:
meanwhile I propose the attached patch to a recent tag in order to fix the
error.

Remark: this fix requires mpi_f08.mod, to be installed by MPICH.

PR: 275432
Approved by: yuri@ 'maintainer)