v2.21.0

What's Changed

• [AUTO] Increment version to 2.21.0. by @opensearch-trigger-bot in #1411
• [Backport 2.x] Bump lycheeverse/lychee-action from 2.2.0 to 2.3.0 by @opensearch-trigger-bot in #1421
• [Backport 2.x] Bump commons-logging:commons-logging from 1.3.4 to 1.3.5 in /java-client (#1418) by @Xtansia in #1422
• Fix serialization of KnnQuery's method_parameters property by @Xtansia in #1427
• Fixed deserializing GeoValidationMethod enum values when uppercase by @Xtansia in #1431
• Add support for GeoDistanceQuery's ignore_unmapped property by @Xtansia in #1430
• Backport/backport 1429 to 2.x by @jainankitk in #1432
• Prepare changelog for releasing 2.21.0 by @Xtansia in #1434

Full Changelog: v2.20.0...v2.21.0