chore(deps-dev): bump watchpack from 2.4.0 to 2.4.2 (#720)

Bumps [watchpack](https://github.com/webpack/watchpack) from 2.4.0 to 2.4.2.
- [Release notes](https://github.com/webpack/watchpack/releases)
- [Commits](webpack/watchpack@v2.4.0...v2.4.2)

---
updated-dependencies:
- dependency-name: watchpack
  dependency-version: 2.4.2
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]