Bump org.elasticsearch.client:elasticsearch-rest-client

Bumps [org.elasticsearch.client:elasticsearch-rest-client](https:/elastic/elasticsearch) from 8.14.3 to 8.15.1.
- [Release notes](https:/elastic/elasticsearch/releases)
- [Changelog](https:/elastic/elasticsearch/blob/main/CHANGELOG.md)
- [Commits](elastic/elasticsearch@v8.14.3...v8.15.1)

---
updated-dependencies:
- dependency-name: org.elasticsearch.client:elasticsearch-rest-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

modules/elasticsearch/build.gradle

@@ -2,7 +2,7 @@ description = "Testcontainers :: elasticsearch"
 
 dependencies {
  api project(':testcontainers')
- testImplementation "org.elasticsearch.client:elasticsearch-rest-client:8.14.3"
+ testImplementation "org.elasticsearch.client:elasticsearch-rest-client:8.15.1"
  testImplementation "org.elasticsearch.client:transport:7.17.24"
  testImplementation 'org.assertj:assertj-core:3.26.3'
 }