[bootlin/training-materials] 55e5d3: Embedded Linux: add "unzip" package to toolchain lab

[Michael Opdenacker]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 55e5d3e2ca7fb8cb700a47b5edf8f587a37ffe16
      https://github.com/bootlin/training-materials/commit/55e5d3e2ca7fb8cb700a47b5edf8f587a37ffe16
  Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
  Date:   2021-11-09 (Tue, 09 Nov 2021)

  Changed paths:
    M labs/sysdev-toolchain/sysdev-toolchain.tex

  Log Message:
  -----------
  Embedded Linux: add "unzip" package to toolchain lab

Needed as a dependency on Ubuntu 20.04

Reported-by: Seppe Stas <Seppe.Stas at qorvo.com>
Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>