chore: update prost requirement from 0.12 to 0.13 in /rust (#335)

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)
- [Changelog](https://github.com/tokio-rs/prost/blob/master/CHANGELOG.md)
- [Commits](tokio-rs/prost@v0.12.0...v0.13.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Carlos Rodriguez <[email protected]>

rust/Cargo.toml

@@ -19,7 +19,7 @@ blake2 = {version = "0.10.6", optional = true, default-features = false}
 blake3 = {version = "1.5.0", optional = true, default-features = false}
 bytes = {version = "1.0.1", default-features = false}
 hex = {version = "0.4.3", default-features = false, features = ["alloc"]}
-prost = {version = "0.12", default-features = false, features = ["prost-derive"]}
+prost = {version = "0.13", default-features = false, features = ["prost-derive"]}
 ripemd = {version = "0.1.1", optional = true, default-features = false}
 sha2 = {version = "0.10.2", optional = true, default-features = false}
 sha3 = {version = "0.10.2", optional = true, default-features = false}

rust/codegen/Cargo.toml

@@ -8,6 +8,6 @@ edition = "2018"
 
 [dependencies]
 bytes = "1.0.1"
-prost = "0.12"
+prost = "0.13"
 prost-build = "0.12"
 informalsystems-pbjson-build = "0.7.0"