v0.19.0

CHANGELOG extracted from https://gitlab.wikimedia.org/repos/releng/cli/-/blob/main/CHANGELOG.md

• Added config get and config set commands
• Updated gitlab command to 1.23.0
• Development environment (mw docker):
  • Image updaters:
    • mysql mariadb:10.8 -> mariadb:10.9.4
    • mediawiki d-r.wm.o/dev/buster-php74 -> d-r.wm.o/dev/buster-php81
    • quibble d-r.wm.o/dev/quibble-buster-php74 -> d-r.wm.o/dev/quibble-buster-php81