build(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-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -45,7 +45,7 @@ sha1 = { version = "=0.11.0-pre.4", optional = true, default-features = false }
 
 [dev-dependencies]
 hex-literal = "0.4.1"
-rand_chacha = "0.3"
+rand_chacha = "0.9"
 
 [features]
 default = ["ecdsa", "rand_core", "std"]