Update python-app.yml

.github/workflows/python-app.yml

@@ -13,6 +13,8 @@ jobs:
         with:
           repository: ome/omero-test-infra
           path: .omero
+      - name: checkout arc_omero
+        uses: actions/checkout@v3
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -21,7 +23,7 @@ jobs:
         run: |
           python -m venv test_env
           source test_env/bin/activate
-          pip install zeroc-ice
+          pip install --upgrade pip
           pip install "omero-cli-transfer @ git+https://github.com/MicheleBortol/omero-cli-transfer.git"
           pip install ".[dev]"
       - run:  echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."