Bump elasticsearch from 7.11.2 to 7.14.0 in /elasticsearch-6.4.0-plugin

Bumps [elasticsearch](https://github.com/elastic/elasticsearch) from 7.11.2 to 7.14.0.
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Changelog](https://github.com/elastic/elasticsearch/blob/master/CHANGELOG.md)
- [Commits](elastic/elasticsearch@v7.11.2...v7.14.0)

---
updated-dependencies:
- dependency-name: org.elasticsearch:elasticsearch
  dependency-type: direct:production
...

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Author: dependabot[bot]

elasticsearch-6.4.0-plugin/pom.xml

@@ -12,7 +12,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <elasticsearch.version>7.11.2</elasticsearch.version>
+    <elasticsearch.version>7.14.0</elasticsearch.version>
     <maven.compiler.source>10</maven.compiler.source>
     <maven.compiler.target>10</maven.compiler.target>
   </properties>