build(deps): bump rand from 0.7.3 to 0.8.5

Bumps [rand](https://github.com/rust-random/rand) from 0.7.3 to 0.8.5.
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand@0.7.3...0.8.5)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -28,7 +28,7 @@ getrandom = { version = "0.1", features = ["dummy"] }
 itertools = { workspace = true }
 lazy_static = { workspace = true }
 merlin = { workspace = true }
-rand = { version = "0.7" }
+rand = { version = "0.8" }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 sha3 = "0.9"