Set httpcore5 to 5.2 to be compatible with httpclient5 5.2.1

[cwperks]

Description

org.apache.httpcomponents.client5:httpclient5:5.2.1 is compatible with httpcore5:5.2 and the recent upgrade to 5.2.2 is causing problems running an extension using the SDK. I am opening a PR to downgrade the version to 5.2 which is compatible with httpclient:5.2.1

Issues Resolved

opensearch-project/opensearch-sdk-java#857

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[owaiskazi19]

LGTM!

[reta]

@cwperks the core and opensearch-java are using the same HttpClient5 / HttpCore5 version, we need to look at SDK repo and find out where 5.2 is coming from:

Execution failed for task ':compileJava'.
> Could not resolve all dependencies for configuration ':compileClasspath'.
   > Conflict(s) found for the following module(s):
       - org.apache.httpcomponents.client5:httpclient5 between versions 5.2.1 and 5.1.4
       - org.apache.httpcomponents.core5:httpcore5 between versions 5.2.2, 5.1.5 and 5.2
       - org.apache.httpcomponents.core5:httpcore5-h2 between versions 5.2.2, 5.1.5 and 5.2

[cwperks]

@reta the Pom file for HttpClient5:5.2.1 references HttpCore5:5.2

[reta]

@reta the Pom file for HttpClient5:5.2.1 references HttpCore5:5.2

This is fine, since we providing the version explicitly for core5, the 5.2 would have sneaked if transient only