(CI: make pip run without --quiet)

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
         wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add - && echo "deb http://repo.mongodb.org/apt/debian buster/mongodb-org/5.0 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
         sudo apt-get update && sudo apt-get -y install python3-wheel python3-pip mongodb-org
         python -m pip install -q flake8
-        pip install -q -r requirements.txt
+        pip install -r requirements.txt
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names