GHA: Install obs-scm-bridge directly from github in the behave test

.github/workflows/tests.yaml

@@ -131,7 +131,9 @@ jobs:
         run: |
             sudo sh -c '. /etc/os-release; echo "deb [trusted=yes] http://download.opensuse.org/repositories/openSUSE:Tools/xUbuntu_${VERSION_ID} ./" > /etc/apt/sources.list.d/openSUSE-Tools.list'
             sudo apt-get -y update
-            sudo apt-get -y --no-install-recommends install python3-behave diffstat diffutils python3 python3-cryptography python3-pip python3-rpm python3-ruamel.yaml python3-setuptools python3-urllib3 obs-build obs-service-set-version
+            sudo apt-get -y --no-install-recommends install git python3-behave diffstat diffutils python3 python3-cryptography python3-pip python3-rpm python3-ruamel.yaml python3-setuptools python3-urllib3 obs-build obs-service-set-version
+            sudo pip3 config set global.break-system-packages 1
+            sudo pip3 install git+https://github.com/openSUSE/obs-scm-bridge
 
       - name: "Checkout sources"
         uses: actions/checkout@v3