In #19194 the license was incorrectly changed to say that Nomad 1.6.2 or later
was under the BUSL, when in fact Nomad 1.6.2 and 1.6.3 are MPL2 licensed. Fix
this so that the correct (next!) version is shown as covered only.
Going forward, this project will be licensed under the Business Source License v1.1. Please see our blog post for more details at https://hashi.co/bsl-blog, FAQ at https://hashi.co/license-faq, and details of the license at www.hashicorp.com/bsl.