v0.156.0

## Release v0.156.0 (2026-10-22)

### API Changes
* Add `start_endpoint()` and `stop_endpoint()` methods for [w.vector_search_endpoints](https://databricks-sdk-py.readthedocs.io/en/latest/workspace/vectorsearch/vector_search_endpoints.html) workspace-level service.
* Add `include_external_spend` field for `databricks.sdk.service.billing.BudgetConfiguration`.
* Add `include_external_spend` field for `databricks.sdk.service.billing.CreateBudgetConfigurationBudget`.
* Add `include_external_spend` field for `databricks.sdk.service.billing.UpdateBudgetConfigurationBudget`.
* Add `regex` field for `databricks.sdk.service.iamv2.IdentityVisibilityFilter`.
* Add `relative_error` field for `databricks.sdk.service.ml.ApproxCountDistinctFunction`.
* Add `relative_error` field for `databricks.sdk.service.ml.ApproxPercentileFunction`.
* Add `condition`, `min_time_between_triggers` and `wait_after_last_change` fields for `databricks.sdk.service.ml.TableTrigger`.
* Add `onedrive_options` field for `databricks.sdk.service.pipelines.ConnectorOptions`.
* Add `stopping`, `stopped` and `starting` enum values for `databricks.sdk.service.aisearch.EndpointStatusState`.
* Add `operation_action_type_unbind` enum value for `databricks.sdk.service.bundledeployments.OperationActionType`.
* Add `onedrive` enum value for `databricks.sdk.service.pipelines.IngestionSourceType`.
* Add `stopping`, `stopped` and `starting` enum values for `databricks.sdk.service.vectorsearch.EndpointStatusState`.