chore(main): release 1.140.0

[release-please]

🤖 I have created a release beep boop

1.140.0 (2026-02-27)

Features

• A new field computation_based_metric_spec is added to message .google.cloud.aiplatform.v1beta1.Metric (e5f71de)
• A new field evaluation_run is added to message .google.cloud.aiplatform.v1beta1.EvaluateDatasetRun (e5f71de)
• A new field inference_generation_config is added to message .google.cloud.aiplatform.v1beta1.EvaluationConfig (e5f71de)
• A new field llm_based_metric_spec is added to message .google.cloud.aiplatform.v1beta1.Metric (e5f71de)
• A new field metric_results is added to message .google.cloud.aiplatform.v1beta1.EvaluateInstancesResponse (e5f71de)
• A new field predefined_metric_spec is added to message .google.cloud.aiplatform.v1beta1.Metric (e5f71de)
• A new message ComputationBasedMetricSpec is added (e5f71de)
• A new message LLMBasedMetricSpec is added (e5f71de)
• A new message MetricResult is added (e5f71de)
• A new message PredefinedMetricSpec is added (e5f71de)
• Add traffic_type, tool_use_prompt_tokens_details to message GenerateContentResponse.UsageMetadata (e5f71de)
• Add image_spec to Reasoning Engine public protos (e5f71de)
• Add image_spec to Reasoning Engine public protos (e5f71de)
• Add max_concurrent_active_run_count field to Schedule message (e5f71de)
• Add max_concurrent_active_run_count field to Schedule message (e5f71de)
• Add model_armor_config to GeminiExample (e5f71de)
• Add resource_reference to the field name in message .google.cloud.aiplatform.v1beta1.Dataset (e5f71de)
• Add resource_reference to the field name in message .google.cloud.aiplatform.v1beta1.DatasetVersion (e5f71de)
• Add support for agent_config_source (ADK) in AgentEngines (204e5b4)
• Add the GenAI client for the Agent Engine Task Store Service (b54ce6d)
• Add transcription fields to Session Service (e5f71de)
• Add v1 API version for Session Service (e5f71de)
• Add Vertex Multimodal Datasets as input and output types in google.cloud.aiplatform.v1beta1.BatchPredictionJob (e5f71de)
• Add Vertex Multimodal Datasets as input and output types in google.cloud.aiplatform.v1beta1.BatchPredictionJob (e5f71de)

Documentation

• A comment for enum AggregationMetric is changed (e5f71de)
• A comment for field aggregation_output in message .google.cloud.aiplatform.v1beta1.EvaluateDatasetResponse is changed (e5f71de)
• A comment for field expire_time in message .google.cloud.aiplatform.v1beta1.Session is changed (e5f71de)
• A comment for field filter in message .google.cloud.aiplatform.v1beta1.ListSessionsRequest is changed (e5f71de)
• A comment for field output_info in message .google.cloud.aiplatform.v1beta1.EvaluateDatasetResponse is changed (e5f71de)
• A comment for field ttl in message .google.cloud.aiplatform.v1beta1.Session is changed (e5f71de)
• A comment for message EvaluateDatasetResponse is changed (e5f71de)
• A comment for message Metric is changed (e5f71de)
• A comment for message OutputInfo is changed (e5f71de)
• Comment on evaluate_dataset_response clarified (e5f71de)
• Update documentation of .google.cloud.aiplatform.v1.DatasetService, .google.cloud.aiplatform.v1.Dataset, and .google.cloud.aiplatform.v1.DatasetVersion (e5f71de)
• Update documentation of .google.cloud.aiplatform.v1beta1.Dataset and .google.cloud.aiplatform.v1beta1.DatasetVersion (e5f71de)

---

This PR was generated with Release Please. See documentation.