Fix pre-commit workflow

Author: csala

.github/workflows/tests.yml

@@ -18,6 +18,8 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: 3.11
+    - name: Installation (deps and package)
+      run: pip install .
     - uses: pre-commit/[email protected]
 
   tests: