Update pipelines for PyGObject 3.51+

Author: rayluo

.github/workflows/python-package.yml

@@ -61,6 +61,9 @@ jobs:
       run: |
         sudo apt update
         sudo apt install python3-dev libgirepository1.0-dev libcairo2-dev gir1.2-secret-1 gnome-keyring
+        # girepository-2.0 becomes necessary since PyGobject 3.51 https://pygobject.gnome.org/changelog.html#pre-release
+        sudo apt install girepository-2.0
+        #sudo apt install python3-gi python3-gi-cairo gir1.2-gtk-3.0 python3-dev python3-gi-cairo girepository-2.0
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip