fix test workflow formatting :')

.github/workflows/tests.yml

@@ -19,12 +19,12 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-    
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install ".[test]"
-    
+
     - name: Run tests
       run: |
         pytest