Update dependency org.opensearch.client:opensearch-java to v2.21.0

[mend-for-github-com]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.opensearch.client:opensearch-java	2.20.0 -> 2.21.0

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Release Notes

opensearch-project/opensearch-java (org.opensearch.client:opensearch-java)

v2.21.0

Added

• Added support for GeoDistanceQuery's ignore_unmapped property (#​1430)
• Added support for docvalue_fields in msearch (#​1429)

Dependencies

• Bump commons-logging:commons-logging from 1.3.4 to 1.3.5 (#​1418)

Fixed

• Fixed serialization of KnnQuery's method_parameters property (#​1427)
• Fixed deserializing GeoValidationMethod enum values when uppercase (#​1431)

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.64%. Comparing base (00eb17a) to head (5576b2c).

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #87   +/-   ##
=========================================
  Coverage     82.64%   82.64%           
  Complexity      309      309           
=========================================
  Files            25       25           
  Lines          1239     1239           
  Branches        112      112           
=========================================
  Hits           1024     1024           
  Misses          160      160           
  Partials         55       55           

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