Bump tokio-util from 0.7.14 to 0.7.15

Bumps [tokio-util](https://github.com/tokio-rs/tokio) from 0.7.14 to 0.7.15.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-util-0.7.14...tokio-util-0.7.15)

---
updated-dependencies:
- dependency-name: tokio-util
  dependency-version: 0.7.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -18,7 +18,7 @@ framehop = "0.13"
 linux-perf-data = "0.11"
 
 tokio = { version = "1.39", features = ["rt", "rt-multi-thread", "macros"] }
-tokio-util = "0.7.11"
+tokio-util = "0.7.15"
 hyper = { version = "1", features = ["full"] }
 hyper-util = { version = "0.1.9", features = ["server", "http1", "tokio"] }
 http-body-util = "0.1"