chore(deps): bump rand_chacha from 0.3.1 to 0.9.0

Bumps [rand_chacha](https://github.com/rust-random/rand) from 0.3.1 to 0.9.0.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand@rand_chacha-0.3.1...0.9.0)

---
updated-dependencies:
- dependency-name: rand_chacha
  dependency-version: 0.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -29,7 +29,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 # Random number generation for splits
 rand = "0.9"
-rand_chacha = "0.3"
+rand_chacha = "0.9"
 # File walking
 walkdir = "2.5"
 # Error handling