Fix CI: Fix mocks

src/test/python/release_mixin/mock_domain.py

@@ -35,7 +35,8 @@ class MockRelease():
 
     def validate(self, main_branch):
         self.validate_count += 1
-        return self.is_valid
+        return []
 
     def is_valid(self, main_branch):
-        return True
+        return len(self.validate(main_branch)) < 1
+        

src/test/python/release_mixin/mock_infrastructure_api.py

@@ -33,6 +33,10 @@ class MockGitApi():
         self.tag_annotated_count += 1 
         return " "
     
+    def tag_annotated_second_last(self, annotation: str, message: str):
+        self.tag_annotated(annotation, message, 1)
+        return " "
+
     def get_latest_tag(self):
         return " "