build(deps): bump prost from 0.14.3 to 0.14.4

Bumps [prost](https://github.com/tokio-rs/prost) from 0.14.3 to 0.14.4.
- [Release notes](https://github.com/tokio-rs/prost/releases)
- [Changelog](https://github.com/tokio-rs/prost/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/prost/compare/v0.14.3...v0.14.4)

---
updated-dependencies:
- dependency-name: prost
  dependency-version: 0.14.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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