chore(deps): bump rand

Bumps the cargo group with 1 update in the /ipv6-only directory: [rand](https://github.com/rust-random/rand).


Updates `rand` from 0.8.5 to 0.9.3
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/0.9.3/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.5...0.9.3)

---
updated-dependencies:
- dependency-name: rand
  dependency-version: 0.9.3
  dependency-type: direct:production
  dependency-group: cargo
...

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

Author: dependabot[bot]

ipv6-only/Cargo.lock

@@ -15,7 +15,7 @@ clap = { version = "4", features = ["derive"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 thiserror = "1"
-rand = "0.8"
+rand = "0.9"
 hex = "0.4"
 
 [dependencies]