Update CKEditor 5 to 40.1.0

Problem/Motivation

#3377562: Update CKEditor 5 to 39.0.0 already landed in 10.2.x👍

https://github.com/ckeditor/ckeditor5/releases/tag/v40.1.0will appear NEXT WEEK (the week of 10.2.0-beta1) was released.

Nightly changelog that will not change much anymore: https://github.com/ckeditor/ckeditor5/issues/14724
Changelog: https://github.com/ckeditor/ckeditor5/releases/tag/v40.1.0

Proposed resolution

1. Update core/package.json
2. yarn --cwd core install && yarn --cwd core build && yarn --cwd core build:ckeditor5-types

Remaining tasks

TBD

User interface changes

None.

API changes

None.

Data model changes

None.

Release notes snippet

CKEditor 5 has been updated to 40.1.0.