2024.08

Update for 2024.08

• Changes:
  • Rework patch notes
  • Update kernel for x86_64_mender_defconfig to 6.6.50
  • Ensure built-in buildroot tests for mender work properly.
  • The mender package .mk file has been reworked to be cleaner.
  • system-online.target is no longer a requirement for mender-authd and mender-updated