build(deps): update rand requirement from ^0.8 to ^0.9

Updates the requirements on [rand](https://github.com/rust-random/rand) to permit the latest version.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.0...0.9.0)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -31,7 +31,7 @@ once_cell = "^1.8"
 [dev-dependencies]
 quickcheck = "^1.0"
 serde_json = "^1.0"
-rand = "^0.8"
+rand = "^0.9"
 pretty_assertions = "^1.0"
 
 [[test]]