v1.27.0

This is a major Buildroot update.

Please see the nerves_system_br v1.27.0 release notes
for upgrade instructions if you've forked this system.

• Changes

  • The libcamera and rpicam_apps packages have been replaced with the
    Raspberry Pi-forked versions for better compatibility. Please see
    nerves_system_br release notes.
  • Add back CONFIG_RASPBERRYPI_GPIOMEM to support the dht library.

• Updated dependencies

  • Linux 6.1.73 (Raspberry Pi 20240124 release)
  • nerves_system_br v1.27.0
  • Buildroot 2024.02
  • Erlang/OTP 26.2.3