chore: bump serial_test from 0.5.1 to 0.6.0 (#23414)

Bumps [serial_test](https://github.com/palfrey/serial_test) from 0.5.1 to 0.6.0.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](https://github.com/palfrey/serial_test/compare/v0.5.1...v0.6.0)

---
updated-dependencies:
- dependency-name: serial_test
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

rpc/Cargo.toml

@@ -55,7 +55,7 @@ tokio = { version = "1", features = ["full"] }
 tokio-util = { version = "0.6", features = ["codec", "compat"] }
 
 [dev-dependencies]
-serial_test = "0.5.1"
+serial_test = "0.6.0"
 solana-net-utils = { path = "../net-utils", version = "=1.10.0" }
 solana-stake-program = { path = "../programs/stake", version = "=1.10.0" }
 symlink = "0.1.0"