⬆ Bump elasticsearch

Bumps [elasticsearch](https://github.com/elastic/elasticsearch) from 7.3.0 to 7.11.0.
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Commits](https://github.com/elastic/elasticsearch/compare/v7.3.0...v7.11.0)
Signed-off-by: Ndependabot[bot] <support@github.com>

demo-elasticsearch-rest-high-level-client/pom.xml

@@ -59,7 +59,7 @@
     <dependency>
       <groupId>org.elasticsearch</groupId>
       <artifactId>elasticsearch</artifactId>
-      <version>7.3.0</version>
+      <version>7.11.0</version>
     </dependency>
 
     <!-- elasticsearch-rest-client -->