deps(rust): update rand requirement from 0.8 to 0.9 in /apps/core

Updates the requirements on [rand](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@0.8.0...rand_core-0.9.2)

---
updated-dependencies:
- dependency-name: rand
  dependency-version: 0.9.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

apps/core/Cargo.toml

@@ -52,7 +52,7 @@ lz4 = "1.28"
 parking_lot = "0.12"
 parquet = { version = "~57.1", features = ["arrow", "async"] }
 prometheus = "0.13"
-rand = "0.8"
+rand = "0.9"
 rocksdb = { version = "0.22", optional = true }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"