Update prost requirement from 0.11 to 0.12

Updates the requirements on [prost](https://github.com/tokio-rs/prost) to permit the latest version.
- [Release notes](https://github.com/tokio-rs/prost/releases)
- [Commits](tokio-rs/prost@prost-build-0.11.1...v0.12.0)

---
updated-dependencies:
- dependency-name: prost
  dependency-type: direct:production
...

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

arrow-flight/Cargo.toml

@@ -44,7 +44,7 @@ bytes = { version = "1", default-features = false }
 futures = { version = "0.3", default-features = false, features = ["alloc"] }
 once_cell = { version = "1", optional = true }
 paste = { version = "1.0" }
-prost = { version = "0.11", default-features = false, features = ["prost-derive"] }
+prost = { version = "0.12", default-features = false, features = ["prost-derive"] }
 tokio = { version = "1.0", default-features = false, features = ["macros", "rt", "rt-multi-thread"] }
 tonic = { version = "0.9", default-features = false, features = ["transport", "codegen", "prost"] }
 

arrow-integration-testing/Cargo.toml

@@ -39,7 +39,7 @@ async-trait = { version = "0.1.41", default-features = false }
 clap = { version = "4", default-features = false, features = ["std", "derive", "help", "error-context", "usage"] }
 futures = { version = "0.3", default-features = false }
 hex = { version = "0.4", default-features = false, features = ["std"] }
-prost = { version = "0.11", default-features = false }
+prost = { version = "0.12", default-features = false }
 serde = { version = "1.0", default-features = false, features = ["rc", "derive"] }
 serde_json = { version = "1.0", default-features = false, features = ["std"] }
 tokio = { version = "1.0", default-features = false }