Use test/coverage commands directly as `make` is not available in CI

.gitlab-ci.yml

@@ -15,8 +15,8 @@ test:
   services:
     - redis:latest
   script:
-    - make test
-    - make coverage
+    - pytest
+    - coverage run --source vsq -m pytest
   artifacts:
     paths:
       - htmlcov/index.html