Bump elasticsearch.version from 8.15.0 to 8.16.1

Bumps `elasticsearch.version` from 8.15.0 to 8.16.1.

Updates `org.elasticsearch:elasticsearch` from 8.15.0 to 8.16.1
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Changelog](https://github.com/elastic/elasticsearch/blob/main/CHANGELOG.md)
- [Commits](elastic/elasticsearch@v8.15.0...v8.16.1)

Updates `org.elasticsearch.test:framework` from 8.15.0 to 8.16.1
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Changelog](https://github.com/elastic/elasticsearch/blob/main/CHANGELOG.md)
- [Commits](elastic/elasticsearch@v8.15.0...v8.16.1)

---
updated-dependencies:
- dependency-name: org.elasticsearch:elasticsearch
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.elasticsearch.test:framework
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -58,7 +58,7 @@
 
         <querqy.lucene.version>5.7.lucene961.0</querqy.lucene.version>
 
-        <elasticsearch.version>8.15.0</elasticsearch.version>
+        <elasticsearch.version>8.16.1</elasticsearch.version>
         <jacoco.version>0.8.12</jacoco.version>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>