Adding @sohami to OpenSearch maintainers

[Bukhtawar]

I have nominated and maintainers have agreed to invite Sorabh Hamirwasia(@sohami) to be a co-maintainer. Sorabh has kindly accepted.

Sorabh has led the design and implementation of multiple features like query cancellation, concurrent segment search for aggregations and snapshot inter-operability w/remote storage in OpenSearch. Some significant issues and PRs authored by Sorabh for this effort are as follows:

Feature proposals

Concurrent segment search for aggregations : #6798
Searchable Remote Index : #2900

Implementations

Concurrent segment search for aggregations: #7514
Lucene changes to leaf slices for concurrent search: apache/lucene#12374
Moving concurrent search to core : #7203
Query cancellation support : #986
In total, Sorabh has authored 14 PRs going back to Aug 2021. He also frequently reviews contributions from others and has reviewed nearly 20 PRs in the same time frame. I believe Sorabh will be a valuable addition as a maintainer of OpenSearch and will continue to contribute to the success of the project going forward.

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.cluster.allocation.AwarenessAllocationIT.testThreeZoneOneReplicaWithForceZoneValueAndLoadAwareness

• URL: https://build.ci.opensearch.org/job/gradle-check/20724/
• CommitID: 07e9142
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #8828 (07e9142) into main (db838c4) will increase coverage by 0.07%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #8828      +/-   ##
============================================
+ Coverage     71.02%   71.10%   +0.07%     
- Complexity    57176    57255      +79     
============================================
  Files          4757     4757              
  Lines        269804   269804              
  Branches      39454    39454              
============================================
+ Hits         191632   191839     +207     
+ Misses        62046    61828     -218     
- Partials      16126    16137      +11     

see 454 files with indirect coverage changes