ci: restore old python way of installing packages system-wide (--break-system-packages)

we should move to a virtual env

Author: avivace

.github/workflows/build-and-deploy.yml

@@ -105,7 +105,7 @@ jobs:
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r pandocs/requirements.txt
+        pip install -r pandocs/requirements.txt --break-system-packages
 
     - name: Check links
       working-directory: pandocs/