use pytest instead of run_all for nix

Author: ocefpaf

.github/workflows/cibuildwheel.yml

@@ -84,8 +84,8 @@ jobs:
         CIBW_BEFORE_BUILD_MACOS: brew install hdf5 netcdf
         CIBW_TEST_REQUIRES: pytest cython packaging
         CIBW_TEST_COMMAND: >
-          python -c "import netCDF4; print(f'netCDF4 v{netCDF4.__version__}')" &&
-          cd {project}/test && python run_all.py
+          python -c "import netCDF4; print(f'netCDF4 v{netCDF4.__version__}')"
+          && pytest -s -rxs -v {project}/test
 
     - uses: actions/upload-artifact@v4
       with: