chore(deps): Update napi requirement in /src/code-validator/guest

Updates the requirements on [napi](https://github.com/napi-rs/napi-rs) to permit the latest version.
- [Release notes](https://github.com/napi-rs/napi-rs/releases)
- [Commits](https://github.com/napi-rs/napi-rs/compare/napi@2.0.0...napi-v3.8.4)

---
updated-dependencies:
- dependency-name: napi
  dependency-version: 3.8.4
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/code-validator/guest/host/Cargo.toml

@@ -17,7 +17,7 @@ crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 hyperlight-host = { workspace = true }
-napi = { version = "2", features = ["async", "napi6"] }
+napi = { version = "3", features = ["async", "napi6"] }
 napi-derive = "2"
 sha2 = "0.11"
 hex = "0.4"