build(deps): bump flatted from 3.3.3 to 3.4.1 in /json (#330)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]