workflow: separate stages

.github/workflows/main.yml

@@ -26,7 +26,9 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: install editable package
-        run: pip install -e . && pip install -r ./requirements-test.txt
+        run: pip install -e .
+      - name: Install test dependencies
+        run: pip install -r ./requirements-test.txt
       - name: run pyright
         uses: jakebailey/pyright-action@v1
       - name: run unit tests