build(deps): bump serial_test from 3.1.0 to 3.1.1 (#6649)

Bumps [serial_test](https://github.com/palfrey/serial_test) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](https://github.com/palfrey/serial_test/compare/v3.1.0...v3.1.1)

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

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

program/Cargo.toml

@@ -24,7 +24,7 @@ thiserror = "1.0"
 [dev-dependencies]
 lazy_static = "1.4.0"
 proptest = "1.4"
-serial_test = "3.1.0"
+serial_test = "3.1.1"
 solana-program-test = ">=1.18.11,<=2"
 solana-sdk = ">=1.18.11,<=2"