Bump prost-wkt-build from 0.5.0 to 0.5.1

Bumps [prost-wkt-build](https://github.com/fdeantoni/prost-wkt) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/fdeantoni/prost-wkt/releases)
- [Commits](fdeantoni/prost-wkt@v0.5.0...v0.5.1)

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

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