adding github action pytest missing dependency for pytest-cov

.github/workflows/run-tests.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pytest pytest python-dateutil==2.8.2 pint==0.21 importlib-metadata==6.7.0
+          pip install pytest pytest-cov python-dateutil==2.8.2 pint==0.21 importlib-metadata==6.7.0
       #- name: Install conda env
       #  uses: conda-incubator/setup-miniconda@v2
       #  with: