Disable python2 + pipenv tests

Just like we did for poetry and Python 2 in #1124

From looking at changelogs, Python2 has not been supported in Pipenv since [v2021.11.5](https://pipenv.pypa.io/en/latest/changelog/#id149)

Author: RasmusWL

.github/workflows/python-deps.yml

@@ -33,6 +33,9 @@ jobs:
             # Python2 and poetry are not supported. See https://github.com/actions/setup-python/issues/374
             - python_version: 2
               python_deps_type: poetry
+            # Python2 and pipenv are not supported since pipenv v2021.11.5
+            - python_version: 2
+              python_deps_type: pipenv
 
 
     env:
@@ -135,6 +138,9 @@ jobs:
             # Python2 and poetry are not supported. See https://github.com/actions/setup-python/issues/374
             - python_version: 2
               python_deps_type: poetry
+            # Python2 and pipenv are not supported since pipenv v2021.11.5
+            - python_version: 2
+              python_deps_type: pipenv
 
     env:
       PYTHON_DEPS_TYPE: ${{ matrix.python_deps_type }}