fix mpi4py

Author: ax3l

.github/workflows/dependencies/conda.sh

@@ -11,4 +11,4 @@ conda update -n base conda
 conda install -n base conda-libmamba-solver
 conda config --set solver libmamba
 
-conda install -c conda-forge blaspp ccache cmake compilers git lapackpp "openpmd-api=*=mpi_mpich*" python "mpi4py=*=mpi_mpich*" numpy pandas scipy yt "fftw=*=mpi_mpich*" pkg-config setuptools matplotlib mpich pip virtualenv wheel
+conda install -c conda-forge blaspp ccache cmake compilers git lapackpp "openpmd-api=*=mpi_mpich*" python mpi4py numpy pandas scipy yt "fftw=*=mpi_mpich*" pkg-config setuptools matplotlib mpich pip virtualenv wheel