This issue is automatically created based on existing pull request: #40049: matthiasmullie/minify - replacing JS & CSS libraries with a better one

Description (*)

I've replaced old CSS / JS minification libraries with https://github.com/matthiasmullie/minify - which is maintained, up to date and covered with tests.

Fixed Issues (if relevant)

Manual testing scenarios (*)

1. enable CSS minification
2. enable JS minification
3. enable production mode
4. test frontend, backend

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)