Bump webpack from 4.46.0 to 4.47.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.46.0 to 4.47.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.46.0...v4.47.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>