CI: block pip 22.1

see pypa/pip#11123

.github/workflows/release.yaml

@@ -24,7 +24,7 @@ jobs:
 
       - name: Install/update dependencies
         run: |
-          python3 -m pip install -U pip
+          python3 -m pip install "pip<22.1"
           python3 -m pip install -U setuptools setuptools-scm build wheel
           python3 -m pip install -U pillow pytest importchecker codespell reuse twine check-wheel-contents