Update version check in test_gitlab.py

The version checked in the test has been updated from "120.0" to "121.0". This reflects the changes made to the codebase and ensures that the test will pass with the updated software version.

tests/test_gitlab.py

@@ -42,4 +42,4 @@ def test_gitlab_nested_subgroup_project():
 
     release = latest(repo, output_format="dict")
 
-    assert release["version"] == version.parse("120.0")
+    assert release["version"] == version.parse("121.0")