tools: bump flatted from 3.3.3 to 3.4.1 in /tools/eslint

Bumps [flatted](https://github.com/WebReflection/flatted) from 3.3.3 to 3.4.1.
- [Commits](WebReflection/flatted@v3.3.3...v3.4.1)

---
updated-dependencies:
- dependency-name: flatted
  dependency-version: 3.4.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
PR-URL: #62255
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: dependabot[bot]