[TASK] Update codemirror to 5.40.2

Used commands:
yarn add codemirror@^5.40.0 --dev
grunt build

Resolves: #86700
Releases: master
Change-Id: I07a146e2ca108339092e16d769fef8031e783511
Reviewed-on: https://review.typo3.org/58662


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>