Update test.yml

Author: fkiraly

.github/workflows/test.yml

@@ -112,7 +112,7 @@ jobs:
       - name: Install dependencies for scikit-learn ${{ matrix.sklearn-version }}
         run: |
           python -m pip install --upgrade pip
-          python -m .[all_extras,test] scikit-learn==${{ matrix.sklearn-version }}
+          python -m pip install .[all_extras,test] scikit-learn==${{ matrix.sklearn-version }}
 
       - name: Show dependencies
         run: python -m pip list