build(deps): bump sharp and @parcel/transformer-image in /example

Removes [sharp](https://github.com/lovell/sharp). It's no longer used after updating ancestor dependency [@parcel/transformer-image](https://github.com/parcel-bundler/parcel). These dependencies need to be updated together.


Removes `sharp`

Updates `@parcel/transformer-image` from 2.0.0-beta.2 to 2.7.0
- [Release notes](https://github.com/parcel-bundler/parcel/releases)
- [Changelog](https://github.com/parcel-bundler/parcel/blob/v2/CHANGELOG.md)
- [Commits](parcel-bundler/parcel@v2.0.0-beta.2...v2.7.0)

---
updated-dependencies:
- dependency-name: sharp
  dependency-type: indirect
- dependency-name: "@parcel/transformer-image"
  dependency-type: direct:development
...

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

Author: dependabot[bot]