Bump flatted in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the / directory: [flatted](https://github.com/WebReflection/flatted).


Updates `flatted` from 3.3.2 to 3.4.2
- [Commits](WebReflection/flatted@v3.3.2...v3.4.2)

---
updated-dependencies:
- dependency-name: flatted
  dependency-version: 3.4.2
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]