Bump serial_test from 0.2.0 to 0.3.1 (#7154)

Bumps [serial_test](https://github.com/palfrey/serial_test) from 0.2.0 to 0.3.1.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](https://github.com/palfrey/serial_test/compare/v0.2.0...v0.3.1)

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

core/Cargo.toml

@@ -79,7 +79,7 @@ jemalloc-ctl = "0.3.2"
 hex-literal = "0.2.1"
 matches = "0.1.6"
 reqwest = { version = "0.9.22", default-features = false, features = ["rustls-tls"] }
-serial_test = "0.2.0"
+serial_test = "0.3.1"
 serial_test_derive = "0.2.0"
 
 [[bench]]