[TASK] Update CKEditor to v4.16.2

Update to CKEditor v4.16.2 which addressed browser compatibility
issues and known security vulnerabilities:

https://ckeditor.com/blog/ckeditor-4.16.2-with-browser-improvements-and-security-fixes/

Commands:
  cd Build
  yarn add 'ckeditor4@^4.16.2'
  yarn build

Resolves: #95128
Releases: master, 10.4, 9.5
Change-Id: Ic0c10f2d72bb7d107f53c58dbc0668d19275914b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70917


Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>