[RELEASE] Release v2.3.0

[VachaShah]

Release the next version of opensearch-java with new features and bug fixes.

Requested in:

• [BUG] Parsing exception of date_range and range aggregation response #369 (comment)
• [BUG] Bulk Update Request fails due to inconsistent request body generated by the Java Client #376 (comment)
• [BUG] Bulk UpdateOperation misses upsert options #282 (comment)

[MrEyratnz]

Is this release scheduled? Hoping to avoid switching to HLRC due to #282

[VachaShah]

Is this release scheduled? Hoping to avoid switching to HLRC due to #282

@rmertzpfpt Going to release this today :)

[VachaShah]

Is this release scheduled? Hoping to avoid switching to HLRC due to #282

@rmertzpfpt Going to release this today :)

Triggered the release workflow, waiting for approvals on #405

[VachaShah]

Got approval for the release #406

The jenkins workflow is failing: https://build.ci.opensearch.org/job/opensearch-java-maven-sign-and-release/26/console

[VachaShah]

We are working to fix the issue that is causing the workflow to fail. Once fixed, the artifact should be released.

[VachaShah]

Version 2.3.0 is released https://github.com/opensearch-project/opensearch-java/releases/tag/v2.3.0