build(deps): bump rmp-serde from 1.3.0 to 1.3.1

Bumps [rmp-serde](https://github.com/3Hren/msgpack-rust) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/3Hren/msgpack-rust/releases)
- [Commits](https://github.com/3Hren/msgpack-rust/commits)

---
updated-dependencies:
- dependency-name: rmp-serde
  dependency-version: 1.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -62,7 +62,7 @@ mls-crypto-provider = { path = "mls-provider" }
 obfuscate = { path = "obfuscate" }
 pem = "3.0"
 rand = { version = "0.8", features = ["getrandom"] }
-rmp-serde = "1.3.0"
+rmp-serde = "1.3.1"
 schnellru = "0.2"
 serde = "1.0"
 serde_json = "1.0"