Bump Elastic.Clients.Elasticsearch from 9.4.1 to 9.4.2

[dependabot]

Updated Elastic.Clients.Elasticsearch from 9.4.1 to 9.4.2.

Release notes

Sourced from Elastic.Clients.Elasticsearch's releases.

9.4.2

What's Changed

• Add plugin-defined (non-exhaustive) variant registry by @​flobernd in Add plugin-defined (non-exhaustive) variant registry elastic/elasticsearch-net#8911
  • Unknown discriminators on variant union families (properties, analyzers, char filters, token filters, tokenizers, repositories, similarity settings, aggregations, queries, etc.) now deserialize into an Unknown* carrier and re-serialize losslessly — no data is dropped for plugin-defined or future variants the client doesn't model
  • Opt into strong typing by registering a CLR type for a discriminator: settings.Variants.Register<IProperty, MyPluginProperty>("my_plugin"); registrations are scoped per client instance and AOT-safe — see the Plugin-defined variant types documentation for details
• Regenerate client by @​flobernd in [9.4] Regenerate client elastic/elasticsearch-net#8908 and [9.4] Regenerate client elastic/elasticsearch-net#8917
  • Generated Unknown* carrier types for all variant families (properties, analyzers, char filters, token filters, tokenizers, repositories, similarity settings, aggregations, queries, suggesters, rescorers) to support the non-exhaustive variant registry
  • Improved XML documentation coverage across generated client methods, request/response types, and type members that previously had no IntelliSense descriptions

Full Changelog: elastic/elasticsearch-net@9.4.1...9.4.2

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