Fix test_build_image_custom_components integration test (#6566)

Author: hehe7318

tests/integration-tests/tests/createami/test_createami/test_build_image_custom_components/image.config.yaml

@@ -2,9 +2,9 @@ Build:
   InstanceType: {{ instance_type }}
   ParentImage: {{ parent_image }}
   Components:
-    # Test arn custom component in eu-west-1 except Rocky because stig-build-linux-high component doesn't support Rocky
+    # Test arn custom component in eu-west-1 except Rocky and Ubuntu because stig-build-linux-high component doesn't support these ParallelCuster AMIs.
     # Test script custom component in other regions.
-    {% if region == "eu-west-1" and "rocky" not in os %}
+    {% if region == "eu-west-1" and "rocky" not in os and "ubuntu" not in os %}
     - Type: arn
       Value: arn:{{ partition }}:imagebuilder:{{ region }}:aws:component/stig-build-linux-high/2024.2.3/1
     {% else %}