add certifi dep

Author: Jeff Whitaker

.github/workflows/miniconda.yml

@@ -30,7 +30,7 @@ jobs:
         init-shell: bash
         create-args: >-
           python=${{ matrix.python-version }}
-          numpy cython pip pytest hdf5 libnetcdf cftime zlib
+          numpy cython pip pytest hdf5 libnetcdf cftime zlib certifi
           --channel conda-forge
 
     - name: Install netcdf4-python
@@ -61,7 +61,7 @@ jobs:
         init-shell: bash
         create-args: >-
           python=${{ matrix.python-version }}
-          numpy cython pip pytest mpi4py hdf5=*=mpi* libnetcdf=*=mpi* cftime zlib
+          numpy cython pip pytest mpi4py hdf5=*=mpi* libnetcdf=*=mpi* cftime zlib certifi
           --channel conda-forge
 
     - name: Install netcdf4-python with mpi