chore(deps): update rand_core requirement from 0.6.4 to 0.9.0

Updates the requirements on [rand_core](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@rand_core-0.6.4...0.9.0)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -23,7 +23,7 @@ k256 = {version = "0.13.3", default-features = false, features = ["alloc", "ecds
 lazy_static = {version = "1.4.0", default-features = false, features = ["spin_no_std"]}
 parity-scale-codec = {version = "3.6.9", default-features = false, features = ["derive"]}
 pbkdf2 = {version = "0.12.2", default-features = false}
-rand_core = {version = "0.6.4", default-features = false, optional = true}
+rand_core = {version = "0.9.0", default-features = false, optional = true}
 regex = {version = "1.10.3", default-features = false}
 schnorrkel = {version = "0.11.4", default-features = false, optional = true}
 sha2 = {version = "0.10.8", default-features = false}