Fix: sts update strategy testcase matcher

Signed-off-by: Tyler Gu <[email protected]>

acto/input/test_generators/stateful_set.py

@@ -62,7 +62,9 @@ def replicas_tests(schema: IntegerSchema) -> list[TestCase]:
 
 
 @test_generator(
-    property_name="updateStrategy", priority=Priority.SEMANTIC
+    property_name="updateStrategy",
+    property_type="Object",
+    priority=Priority.SEMANTIC,
 )
 def stateful_set_update_strategy_tests(schema: ObjectSchema) -> list[TestCase]:
     """Generate test cases for StatefulSetUpdateStrategy field"""