post https://console.neon.tech/api/v2/projects//branches//set_as_default
Sets the specified branch as the project's default branch.
The default designation is automatically removed from the previous default branch.
You can obtain a project_id by listing the projects for your Neon account.
You can obtain the branch_id by listing the project's branches.
For more information, see Manage branches.