Update mcstas-testsuite.yml

Unfortunately the full test still seems to hang with openmpi (v5)

Author: willend

.github/workflows/mcstas-testsuite.yml

@@ -20,7 +20,7 @@ jobs:
           - { os: ubuntu-latest, CC: clang,    CXX: clang++,    python: '3.12', mpi: 'mpich' }
           - { os: ubuntu-latest, CC: gcc,    CXX: g++,    python: '3.12', mpi: 'openmpi' }
           - { os: ubuntu-latest, CC: gcc,    CXX: g++,    python: '3.12', mpi: 'mpich' }
-          - { os: macos-latest, CC: clang,    CXX: clang++,    python: '3.12', mpi: 'openmpi' }
+          #- { os: macos-latest, CC: clang,    CXX: clang++,    python: '3.12', mpi: 'openmpi' }
           - { os: macos-latest, CC: clang,    CXX: clang++,    python: '3.12', mpi: 'mpich' }
           - { os: windows-latest, CC: gcc,    CXX: g++,    python: '3.12', mpi: 'msmpi' }