Mute org.elasticsearch.xpack.application.OpenAiServiceUpgradeIT testOpenAiCompletions {upgradedNodes=1} elastic#118162

Author: elasticsearchmachine

muted-tests.yml

@@ -455,3 +455,6 @@ tests:
 - class: org.elasticsearch.xpack.application.OpenAiServiceUpgradeIT
   method: testOpenAiCompletions {upgradedNodes=2}
   issue: https://github.com/elastic/elasticsearch/issues/118163
+- class: org.elasticsearch.xpack.application.OpenAiServiceUpgradeIT
+  method: testOpenAiCompletions {upgradedNodes=1}
+  issue: https://github.com/elastic/elasticsearch/issues/118162