[BUG] Missing `updateVersion` gradle task

[prudhvigodithi]

What is the bug?

This project is missing the generic gradle task updateVersion that is responsible to handle the version increment for the repo.

Plugin team can you please add updateVersion to this repo so that it is consistent with the process of version increment. (More examples: https://github.com/opensearch-project/opensearch-plugin-template-java/pull/32/files#diff-3ab46ee209a127470fce3c2cf[…]badbb929a4b5b13656a4bc4ce19c0b8)

~Having said this the generated RC's for 2.11.1 release has to be re-generated, as the custom-codecs still point to 2.11.0~

This wont impact the RC as the opensearch.version was set to 2.11.1 during build stage, but its just that the the build.gradle will have 2.11.0 for 2.11.1 release.