api: regenerate api commands

[sauterp]

Description

I ran make x-cmd to generate commands for the latest vpc BETA endpoints.

Checklist

(For exoscale contributors)

• Changelog updated (under Unreleased block, and add the Pull Request #number for each bit you add to the CHANGELOG.md)
• Testing

Testing

> go run main.go api | grep vpc
  create-vpc                                         [BETA] Create a VPC
  delete-vpc                                         [BETA] Delete a VPC
  get-vpc                                            [BETA] Retrieve VPC details
  list-vpc-routes                                    [BETA] List VPC routes
  list-vpcs                                          [BETA] List VPCs
  update-vpc                                         [BETA] Update a VPC
> go run main.go api list-vpcs
{
  "vpcs": []
}