Fix workflow

Author: rgieseke

.github/workflows/main.yml

@@ -28,11 +28,13 @@ jobs:
     - name: Installation
       run: |
         python -m pip install --upgrade pip
+        pip install pytest
         pip install .
     - name: Very basic CLI test
       run: |
         cite --help
     - name: Pytest
+      run: |
         pytest tests
 
   deploy-pypi: