[bootlin/training-materials] 5c709b: yocto: lab1: upgrade poky to kirkstone (BBB boards)

[tleb]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 5c709b87642f347f529a579aefd708bb6f3ff575
      https://github.com/bootlin/training-materials/commit/5c709b87642f347f529a579aefd708bb6f3ff575
  Author: Théo Lebrun <theo.lebrun at bootlin.com>
  Date:   2022-07-18 (Mon, 18 Jul 2022)

  Changed paths:
    M labs/yocto-first-build/yocto-first-build.tex

  Log Message:
  -----------
  yocto: lab1: upgrade poky to kirkstone (BBB boards)

Signed-off-by: Théo Lebrun <theo.lebrun at bootlin.com>