Mute org.elasticsearch.xpack.ml.integration.MlJobIT testCreateJobInCustomSharedIndexUpdatesMapping elastic#119660

Author: elasticsearchmachine

muted-tests.yml

@@ -457,3 +457,6 @@ tests:
 - class: org.elasticsearch.search.profile.dfs.DfsProfilerIT
   method: testProfileDfs
   issue: https://github.com/elastic/elasticsearch/issues/119711
+- class: org.elasticsearch.xpack.ml.integration.MlJobIT
+  method: testCreateJobInCustomSharedIndexUpdatesMapping
+  issue: https://github.com/elastic/elasticsearch/issues/119660