Pin pytest under version 8.0.0

tox.ini

@@ -8,7 +8,8 @@ description = run the tests with pytest
 package = wheel
 wheel_build_env = .pkg
 deps =
-  pytest
+  # TODO: Remove this once https://gitlab.teklia.com/atr/data-generator/-/issues/49 is done
+  pytest<8.0.0
   pytest-lazy-fixture
   pytest-responses
   pytest-mock