deps(deps): update rand_core requirement from 0.6 to 0.10

Updates the requirements on [rand_core](https://github.com/rust-random/rand_core) to permit the latest version.
- [Release notes](https://github.com/rust-random/rand_core/releases)
- [Changelog](https://github.com/rust-random/rand_core/blob/master/CHANGELOG.md)
- [Commits](rust-random/rand_core@v0.6.0...v0.10.0)

---
updated-dependencies:
- dependency-name: rand_core
  dependency-version: 0.10.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -32,7 +32,7 @@ ant-quic = "0.21"
 chacha20poly1305 = "0.10"
 
 # Random number generation (shared with saorsa-pqc)
-rand_core = { version = "0.6", features = ["getrandom"] }
+rand_core = { version = "0.10", features = ["getrandom"] }
 rand_chacha = "0.3"
 
 # Constant-time operations (also used by saorsa-pqc)