Bump the npm_and_yarn group across 1 directory with 2 updates

Bumps the npm_and_yarn group with 2 updates in the / directory: [flatted](https://github.com/WebReflection/flatted) and [immutable](https://github.com/immutable-js/immutable-js).


Updates `flatted` from 3.3.3 to 3.4.2
- [Commits](WebReflection/flatted@v3.3.3...v3.4.2)

Updates `immutable` from 5.1.1 to 5.1.5
- [Release notes](https://github.com/immutable-js/immutable-js/releases)
- [Changelog](https://github.com/immutable-js/immutable-js/blob/main/CHANGELOG.md)
- [Commits](immutable-js/immutable-js@v5.1.1...v5.1.5)

---
updated-dependencies:
- dependency-name: flatted
  dependency-version: 3.4.2
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: immutable
  dependency-version: 5.1.5
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]