Install dependencies together

.github/workflows/python-package.yml

@@ -24,8 +24,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
-        pip install -r requirements-dev.txt
+        pip install -r requirements.txt -r requirements-dev.txt
     - name: Lint with black, isort and flake8
       run: |
         black ml_inspector tests --check --verbose