Add support for Python 3.11 (#33505)

Argparse started raising ArgumentError exceptions
when the same parser is added twice. Therefore, we
perform the addition only if the parser is not there
already

Port match syntax to our unparser

.github/workflows/audit.yaml

@@ -25,7 +25,7 @@ jobs:
         python-version: ${{inputs.python_version}}
     - name: Install Python packages
       run: |
-        pip install --upgrade pip six setuptools pytest codecov 'coverage[toml]<=6.2'
+        pip install --upgrade pip six setuptools pytest codecov coverage[toml]
     - name: Package audits (with coverage)
       if: ${{ inputs.with_coverage == 'true' }}
       run: |