Regenerate client using the latest specification (#8388)

Author: flobernd

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/ApiUrlLookup.g.cs

@@ -78,7 +78,6 @@ internal static class ApiUrlLookup
 	internal static ApiUrls IndexManagementPutIndexTemplate = new ApiUrls(new[] { "_index_template/{name}" });
 	internal static ApiUrls IndexManagementPutMapping = new ApiUrls(new[] { "{index}/_mapping" });
 	internal static ApiUrls IndexManagementPutSettings = new ApiUrls(new[] { "_settings", "{index}/_settings" });
-	internal static ApiUrls IndexManagementPutTemplate = new ApiUrls(new[] { "_template/{name}" });
 	internal static ApiUrls IndexManagementRecovery = new ApiUrls(new[] { "_recovery", "{index}/_recovery" });
 	internal static ApiUrls IndexManagementRefresh = new ApiUrls(new[] { "_refresh", "{index}/_refresh" });
 	internal static ApiUrls IndexManagementResolveIndex = new ApiUrls(new[] { "_resolve/index/{name}" });

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/Cluster/ClusterStatsRequest.g.cs

@@ -33,10 +33,10 @@ public sealed partial class ClusterStatsRequestParameters : RequestParameters
 {
 	/// <summary>
 	/// <para>
-	/// If <c>true</c>, returns settings in flat format.
+	/// Include remote cluster data into the response
 	/// </para>
 	/// </summary>
-	public bool? FlatSettings { get => Q<bool?>("flat_settings"); set => Q("flat_settings", value); }
+	public bool? IncludeRemotes { get => Q<bool?>("include_remotes"); set => Q("include_remotes", value); }
 
 	/// <summary>
 	/// <para>
@@ -74,11 +74,11 @@ public ClusterStatsRequest(Elastic.Clients.Elasticsearch.Serverless.NodeIds? nod
 
 	/// <summary>
 	/// <para>
-	/// If <c>true</c>, returns settings in flat format.
+	/// Include remote cluster data into the response
 	/// </para>
 	/// </summary>
 	[JsonIgnore]
-	public bool? FlatSettings { get => Q<bool?>("flat_settings"); set => Q("flat_settings", value); }
+	public bool? IncludeRemotes { get => Q<bool?>("include_remotes"); set => Q("include_remotes", value); }
 
 	/// <summary>
 	/// <para>
@@ -117,7 +117,7 @@ public ClusterStatsRequestDescriptor()
 
 	internal override string OperationName => "cluster.stats";
 
-	public ClusterStatsRequestDescriptor FlatSettings(bool? flatSettings = true) => Qs("flat_settings", flatSettings);
+	public ClusterStatsRequestDescriptor IncludeRemotes(bool? includeRemotes = true) => Qs("include_remotes", includeRemotes);
 	public ClusterStatsRequestDescriptor Timeout(Elastic.Clients.Elasticsearch.Serverless.Duration? timeout) => Qs("timeout", timeout);
 
 	public ClusterStatsRequestDescriptor NodeId(Elastic.Clients.Elasticsearch.Serverless.NodeIds? nodeId)

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/IndexManagement/ClearCacheResponse.g.cs

@@ -29,5 +29,5 @@ namespace Elastic.Clients.Elasticsearch.Serverless.IndexManagement;
 public sealed partial class ClearCacheResponse : ElasticsearchResponse
 {
 	[JsonInclude, JsonPropertyName("_shards")]
-	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics Shards { get; init; }
+	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics? Shards { get; init; }
 }

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/IndexManagement/FlushResponse.g.cs

@@ -29,5 +29,5 @@ namespace Elastic.Clients.Elasticsearch.Serverless.IndexManagement;
 public sealed partial class FlushResponse : ElasticsearchResponse
 {
 	[JsonInclude, JsonPropertyName("_shards")]
-	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics Shards { get; init; }
+	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics? Shards { get; init; }
 }

src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Api/IndexManagement/ForcemergeResponse.g.cs

@@ -29,7 +29,7 @@ namespace Elastic.Clients.Elasticsearch.Serverless.IndexManagement;
 public sealed partial class ForcemergeResponse : ElasticsearchResponse
 {
 	[JsonInclude, JsonPropertyName("_shards")]
-	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics Shards { get; init; }
+	public Elastic.Clients.Elasticsearch.Serverless.ShardStatistics? Shards { get; init; }
 
 	/// <summary>
 	/// <para>