Chore(deps): Bump rand from 0.8.5 to 0.9.4

Bumps [rand](https://github.com/rust-random/rand) from 0.8.5 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@0.8.5...0.9.4)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -10,7 +10,7 @@ crate-type = ["lib"]
 [dependencies]
 rand_chacha = "0.3"
 rand_core = { version = "0.6", default-features = false }
-rand = "0.8"
+rand = "0.9"
 serde = {version = "1", features = ["derive"] }
 
 # for ECIES