ci: Install cpp-coveralls v0.4.2 from its git repo

Install cpp-coveralls from its git repo to avoid having to use an old
version of setuptools and to get it to work again.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

.github/workflows/ci.yml

@@ -62,8 +62,11 @@ jobs:
           if [ $rc -eq 0 ]; then
             uidgid="$(id -nu):$(id -ng)"
             sudo chown -R ${uidgid} ./
-            pip install setuptools==59.6.0  # Default Jammy version
-            pip install cpp-coveralls
+            git clone https://github.com/eddyxu/cpp-coveralls
+            pushd cpp-coveralls
+             git checkout tags/v0.4.2
+             pip install -e .
+            popd
             cpp-coveralls -b src -e tests -e swtpm --gcov-options '\-lp'
           else
             for f in swtpm/tests/*.log; do echo ">>>>>>> $f <<<<<<<"; tail -n 50 $f; done