Update tests.yml

.github/workflows/tests.yml

@@ -20,7 +20,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        pip install ".[test]"
+        pip install --upgrade ".[test]"
     - name: Test with pytest
       run: |
         pytest --color=yes --cov=cellmap_models --cov-report=xml --cov-report=term-missing tests