chore(deps): update serial_test requirement from 2.0.0 to 3.0.0 (gakonst#2709)

Updates the requirements on [serial_test](https://github.com/palfrey/serial_test) to permit the latest version.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](palfrey/serial_test@v2.0.0...v3.0.0)

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

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

Author: dependabot[bot]

ethers-etherscan/Cargo.toml

@@ -43,7 +43,7 @@ ethers-solc.workspace = true
 
 tempfile.workspace = true
 tokio = { workspace = true, features = ["macros", "rt-multi-thread", "time"] }
-serial_test = "2.0.0"
+serial_test = "3.0.0"
 tracing-subscriber = { workspace = true, features = ["env-filter", "fmt"] }
 
 [features]