Update ci-cd-pipeline.yml

.github/workflows/ci-cd-pipeline.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pytest pytest-mock
+          pip install pytest pytest-mock httpx
           if [ -d "server/" ]; then
             pip install -r server/requirements.txt
           fi