deps(rust): update prometheus requirement in /apps/core

Updates the requirements on [prometheus](https://github.com/tikv/rust-prometheus) to permit the latest version.
- [Changelog](https://github.com/tikv/rust-prometheus/blob/master/CHANGELOG.md)
- [Commits](tikv/rust-prometheus@v0.13.0...v0.14.0)

---
updated-dependencies:
- dependency-name: prometheus
  dependency-version: 0.14.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

apps/core/Cargo.lock

@@ -57,7 +57,7 @@ jsonwebtoken = "9.3"
 lz4 = "1.28"
 parking_lot = "0.12"
 parquet = { version = "53.4", features = ["arrow", "async"] }
-prometheus = "0.13"
+prometheus = "0.14"
 rand = "0.8"
 rocksdb = { version = "0.22", optional = true }
 serde = { version = "1.0", features = ["derive"] }