GHA: Enable global.break-system-packages option for pip

.github/workflows/build-install.yaml

@@ -111,6 +111,7 @@ jobs:
 
       - name: 'Install osc from pip'
         run: |
+            pip config set global.break-system-packages 1
             pip3 install .
 
       - name: 'Run installed osc'

.github/workflows/linters.yaml

@@ -17,6 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
+      - run: pip config set global.break-system-packages 1
       - run: pip install mypy
       - run: pip install types-cryptography types-urllib3
       - run: pip install distro keyring progressbar zstandard

.github/workflows/tests.yaml

@@ -78,6 +78,7 @@ jobs:
 
       - name: 'Run unit tests'
         run: |
+          pip3 config set global.break-system-packages 1
           pip3 install -e .
           python3 setup.py test