Mute org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT test {date.Implicit casting strings to dates for IN operator SYNC} elastic#120159

Author: elasticsearchmachine

muted-tests.yml

@@ -435,3 +435,6 @@ tests:
 - class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
   method: test {date.IN operator with null in list, finds match SYNC}
   issue: https://github.com/elastic/elasticsearch/issues/120158
+- class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
+  method: test {date.Implicit casting strings to dates for IN operator SYNC}
+  issue: https://github.com/elastic/elasticsearch/issues/120159