Regenerate client from commit 44f37c4 of spec repo (DataDog#3405)

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

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

.generator/schemas/v1/openapi.yaml

@@ -3303,6 +3303,7 @@ components:
         - product_analytics
         - on_call_events
         - errors
+        - llm_observability
       example: "logs"
       type: string
       x-enum-varnames:
@@ -3320,6 +3321,7 @@ components:
         - PRODUCT_ANALYTICS
         - ON_CALL_EVENTS
         - ERRORS
+        - LLM_OBSERVABILITY
     FormulaAndFunctionMetricAggregation:
       description: The aggregation methods available for metrics queries.
       enum:

lib/datadog_api_client/v1/models/formula_and_function_events_data_source.rb

@@ -35,5 +35,6 @@ class FormulaAndFunctionEventsDataSource
     PRODUCT_ANALYTICS = "product_analytics".freeze
     ON_CALL_EVENTS = "on_call_events".freeze
     ERRORS = "errors".freeze
+    LLM_OBSERVABILITY = "llm_observability".freeze
   end
 end