build(deps-dev): bump parcel from 2.14.4 to 2.15.1 in /example

Bumps [parcel](https://github.com/parcel-bundler/parcel) from 2.14.4 to 2.15.1.
- [Release notes](https://github.com/parcel-bundler/parcel/releases)
- [Changelog](https://github.com/parcel-bundler/parcel/blob/v2/CHANGELOG.md)
- [Commits](parcel-bundler/parcel@v2.14.4...v2.15.1)

---
updated-dependencies:
- dependency-name: parcel
  dependency-version: 2.15.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]