Update testing.yml

Author: MMathisLab

.github/workflows/testing.yml

@@ -68,7 +68,7 @@ jobs:
         run: poetry lock --no-cache
 
       - name: Install project dependencies
-        run: poetry install --no-root
+        run: poetry install --with dev
 
       - name: Run DLC Live Tests
         run: poetry run dlc-live-test --nodisplay