Merge pull request #1646 from Baeldung/update/elastic4s-client-esjava-8.15.4

Update elastic4s-client-esjava, ... from 8.15.3 to 8.15.4

Author: mergify[bot]

build.sbt

@@ -407,7 +407,7 @@ lazy val scala2_libraries =
 val circeVersion = "0.14.10"
 val monixVersion = "3.4.1"
 val sparkVersion = "3.5.3"
-val elastic4sVersion = "8.15.3"
+val elastic4sVersion = "8.15.4"
 
 val sparkCoreDep = "org.apache.spark" %% "spark-core" % sparkVersion
 val sparkSqlDep = "org.apache.spark" %% "spark-sql" % sparkVersion