Fix test package installation

Author: Code0x58

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install . pytest pytest-cov
+          python -m pip install --editable .[test]
       - name: Run tests
         run: |
           pytest