Make sure elasticsearch-rest-client is on the classpath

9.0.3 of elasticsearch-java switched its dependency on
elasticsearch-rest-client from api to compileOnly so it is no longer
on the classpath of a consumer.

This commit reinstates the dependency so that our auto-configuration
of the RestClient still happens.

gh-46061 is tracking a switch to the new Rest5Client.

See gh-46207

Author: wilkinsona

spring-boot-project/spring-boot-starters/spring-boot-starter-data-elasticsearch/build.gradle

@@ -22,6 +22,7 @@ description = "Starter for using Elasticsearch search and analytics engine and S
 
 dependencies {
 	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
+	api("org.elasticsearch.client:elasticsearch-rest-client")
 	api("org.springframework.data:spring-data-elasticsearch")
 
 	runtimeOnly(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-json"))

spring-boot-project/spring-boot-test-autoconfigure/build.gradle

@@ -36,6 +36,7 @@ dependencies {
 	dockerTestImplementation("com.redis:testcontainers-redis")
 	dockerTestImplementation("com.h2database:h2")
 	dockerTestImplementation("org.assertj:assertj-core")
+	dockerTestImplementation("org.elasticsearch.client:elasticsearch-rest-client")
 	dockerTestImplementation("org.junit.jupiter:junit-jupiter")
 	dockerTestImplementation("org.postgresql:postgresql")
 	dockerTestImplementation("org.testcontainers:cassandra")