Bumps [tinymce](https://github.com/tinymce/tinymce-dist) from 5.3.2 to 5.4.1.
- [Release notes](https://github.com/tinymce/tinymce-dist/releases)
- [Changelog](https://github.com/tinymce/tinymce-dist/blob/master/changelog.txt)
- [Commits](https://github.com/tinymce/tinymce-dist/compare/5.3.2...5.4.1)
Signed-off-by: Ndependabot[bot] <support@github.com>