Update prost-reflect-build requirement from 0.15.0 to 0.16.0

Updates the requirements on [prost-reflect-build](https://github.com/andrewhickman/prost-reflect) to permit the latest version.
- [Release notes](https://github.com/andrewhickman/prost-reflect/releases)
- [Changelog](https://github.com/andrewhickman/prost-reflect/blob/main/CHANGELOG.md)
- [Commits](andrewhickman/prost-reflect@prost-reflect-build-v0.15.1...prost-reflect-build-v0.16.0)

---
updated-dependencies:
- dependency-name: prost-reflect-build
  dependency-version: 0.16.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -81,4 +81,4 @@ tokio = { version = "1.46", features = ["macros"] }
 
 [build-dependencies]
 prost-build = "0.13.5"
-prost-reflect-build = "0.15.2"
+prost-reflect-build = "0.16.0"