v1.19.0

This release updates to Buildroot 2022.02.1 and OTP 25.0. While this should be
an easy update for most projects, many programs have been updated. Please review
the changes in the updated dependencies for details.

• Updated dependencies
  • nerves_system_br v1.19.0
  • Buildroot 2022.02.1. Also see Buildroot 2022.02
  • Erlang/OTP 25.0