chore(deps-dev): bump the npm_and_yarn group across 2 directories with 1 update (#798)

Bumps the npm_and_yarn group with 1 update in the / directory: [flatted](https://github.com/WebReflection/flatted).
Bumps the npm_and_yarn group with 1 update in the /Extras/eslint/plugin-check-copyright directory: [flatted](https://github.com/WebReflection/flatted).


Updates `flatted` from 3.4.1 to 3.4.2
- [Commits](WebReflection/flatted@v3.4.1...v3.4.2)

Updates `flatted` from 3.3.3 to 3.4.2
- [Commits](WebReflection/flatted@v3.4.1...v3.4.2)

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

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

Author: dependabot[bot]