update unit test workflow

Author: Fiona-Waters

.github/workflows/unit-tests.yml

@@ -14,6 +14,12 @@ jobs:
       image: quay.io/project-codeflare/codeflare-sdk-precommit:v0.0.3
     steps:
       - uses: actions/checkout@v3
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip3 install poetry
+          poetry lock --no-update
+          poetry install --with test
       - name: Test with pytest and check coverage
         run: |
           coverage run -m --source=src pytest -v tests/unit_test.py