[TASK] Upgrade asset build stack

Some tools used to build assets have been updated to recent versions. In
the same run, the assets have benn rebuilt.

For future tasks, uglifyjs is replaced with terserjs.

Executed commands:

  yarn remove grunt-contrib-uglify
  yarn add --dev grunt-terser
  yarn add --dev grunt-contrib-imagemin@^3.1
  grunt build

Resolves: #89042
Releases: master
Change-Id: Ib6fa02e6af03c2b079fc13010c2972369f046991
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61575


Tested-by: Benjamin Franzke <bfr@qbus.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>