Bump org.apache.httpcomponents.client5:httpclient5 in /java-client

Bumps [org.apache.httpcomponents.client5:httpclient5](https://github.com/apache/httpcomponents-client) from 5.1.4 to 5.2.1.
- [Changelog](https://github.com/apache/httpcomponents-client/blob/master/RELEASE_NOTES.txt)
- [Commits](apache/httpcomponents-client@rel/v5.1.4...rel/v5.2.1)

---
updated-dependencies:
- dependency-name: org.apache.httpcomponents.client5:httpclient5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

java-client/build.gradle.kts

@@ -151,7 +151,7 @@ dependencies {
     compileOnly("org.opensearch.client", "opensearch-rest-client", opensearchVersion)
     testImplementation("org.opensearch.test", "framework", opensearchVersion)
 
-    api("org.apache.httpcomponents.client5:httpclient5:5.1.4")
+    api("org.apache.httpcomponents.client5:httpclient5:5.2.1")
     api("org.apache.httpcomponents.core5:httpcore5:5.1.5")
     api("org.apache.httpcomponents.core5:httpcore5-h2:5.1.5")