Update linux_and_macos.yml

Set independent homebred installation for gfortran

Author: hirokemono

.github/workflows/linux_and_macos.yml

@@ -47,8 +47,9 @@ jobs:
     - uses: actions/checkout@v2
     - name: build
       run: |
-        brew install gfortran open-mpi fftw hdf5-mpi
+        brew install gfortran
         brew info gfortran
+        brew install open-mpi fftw hdf5-mpi
         brew info open-mpi
         
         mpicc -v