fix unit test

Author: AjitPadhi-Microsoft

.github/workflows/test.yml

@@ -37,6 +37,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r src/backend/requirements.txt
+          pip install -r tests/e2e-test/requirements.txt
 
       - name: Check if test files exist
         id: check_tests