v2.27.3

This is an important security/bug fix that addresses Erlang CVEs for the ssh
module (see Erlang release notes).

• Package updates

  • nerves_system_br v1.31.7. Also
    see nerves_system_br v1.31.6

• Important derived package updates

  • Erlang/OTP 27.3.4.3
  • Buildroot 2025.02.6