Regenerate client from commit 23b5e7e of spec repo (#3448)

Co-authored-by: ci.datadog-api-spec <packages@datadoghq.com>

Author: api-clients-generation-pipeline[bot]

.generator/schemas/v1/openapi.yaml

@@ -32563,7 +32563,11 @@ paths:
         - timeseries_query
   /api/v1/search:
     get:
-      description: Search for metrics from the last 24 hours in Datadog.
+      deprecated: true
+      description: '**Note**: This endpoint is deprecated. Use `/api/v2/metrics` instead.
+
+
+        Search for metrics from the last 24 hours in Datadog.'
       operationId: ListMetrics
       parameters:
       - description: Query string to search metrics upon. Can optionally be prefixed

api/datadogV1/api_metrics.go

@@ -210,7 +210,11 @@ func (a *MetricsApi) ListActiveMetrics(ctx _context.Context, from int64, o ...Li
 }
 
 // ListMetrics Search metrics.
+// **Note**: This endpoint is deprecated. Use `/api/v2/metrics` instead.
+//
 // Search for metrics from the last 24 hours in Datadog.
+//
+// Deprecated: This API is deprecated.
 func (a *MetricsApi) ListMetrics(ctx _context.Context, q string) (MetricSearchResponse, *_nethttp.Response, error) {
 	var (
 		localVarHTTPMethod  = _nethttp.MethodGet