Bump rand from 0.8.6 to 0.9.4

Bumps [rand](https://github.com/rust-random/rand) from 0.8.6 to 0.9.4.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/0.9.4/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.6...0.9.4)

---
updated-dependencies:
- dependency-name: rand
  dependency-version: 0.9.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -70,7 +70,7 @@ subtle = "2"
 hmac = "0.12"
 base64 = "0.22"
 hex = "0.4"
-rand = "0.8"
+rand = "0.9"
 
 # Pure-Rust JS engine + deterministic-replay durable runtime. The only JS engine.
 chidori-js = { path = "../chidori-js", version = "0.3.2" }