Try to install wheel.

.github/workflows/pythonpackage.yml

@@ -25,6 +25,7 @@ jobs:
       - name: Install Debian-specific dependencies
         run: |
           sudo apt install libapt-pkg-dev
+          python -m pip install wheel
           python -m pip install git+https://salsa.debian.org/apt-team/python-apt
           python -m pip install -e ".[debian]"
           mkdir -p ~/.config/breezy/plugins