Updates the specified endpoint. Currently, only changing the associated branch is supported.
The branch that you specify cannot have an existing endpoint.
You can obtain a project_id by listing the projects for your Neon account.
You can obtain an endpoint_id and branch_id by listing your project's endpoints.
An endpoint_id has an ep- prefix. A branch_id has a br- prefix.
For more information about endpoints, see Manage endpoints.
If the returned list of operations is not empty, the endpoint is not ready to use.
The client must wait for the last operation to finish before using the endpoint.
If the endpoint was idle before the update, the endpoint becomes active for a short period of time,
and the control plane suspends it again after the update.