build(deps-dev): bump microbundle from 0.13.3 to 0.14.2 (#489)

Bumps [microbundle](https://github.com/developit/microbundle) from 0.13.3 to 0.14.2.
- [Release notes](https://github.com/developit/microbundle/releases)
- [Changelog](https://github.com/developit/microbundle/blob/master/CHANGELOG.md)
- [Commits](developit/microbundle@v0.13.3...v0.14.2)

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

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