Update dependency org.springframework.data:spring-data-elasticsearch to v6

Author: renovate[bot]

build.gradle

@@ -79,7 +79,7 @@ dependencies {
     implementation "org.springframework.boot:spring-boot-starter-security"
     implementation "org.springframework.boot:spring-boot-starter-actuator"
     implementation "org.springframework.boot:spring-boot-starter-data-jpa"
-    implementation 'org.springframework.data:spring-data-elasticsearch:5.5.5'
+    implementation 'org.springframework.data:spring-data-elasticsearch:6.0.0'
 
 
     // springdoc