Unmute ConfigurationTests test20HostnameSubstitution

Author: mark-vieira

muted-tests.yml

@@ -185,9 +185,6 @@ tests:
 - class: org.elasticsearch.index.reindex.ReindexNodeShutdownIT
   method: testReindexWithShutdown
   issue: https://github.com/elastic/elasticsearch/issues/118040
-- class: org.elasticsearch.packaging.test.ConfigurationTests
-  method: test20HostnameSubstitution
-  issue: https://github.com/elastic/elasticsearch/issues/118028
 - class: org.elasticsearch.packaging.test.ArchiveTests
   method: test40AutoconfigurationNotTriggeredWhenNodeIsMeantToJoinExistingCluster
   issue: https://github.com/elastic/elasticsearch/issues/118029