[BUGFIX] Multiple languages in the update command

If a TYPO3 integrator creates the scheduler command
language:update and defines multiple languages,
e.g. de fr pt, then this is now interpreted.

Releases: master, 10.4
Resolves: #91876
Change-Id: Ia7639f322e5f693aa59f83dacf908b15f2d265ad
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/67394


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Richard Haeser <richard@richardhaeser.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Richard Haeser <richard@richardhaeser.com>