chore(deps): bump tokio-util from 0.7.14 to 0.7.15 (apache#15918)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: xudong.w <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -51,7 +51,7 @@ snmalloc-rs = { version = "0.3", optional = true }
 structopt = { version = "0.3", default-features = false }
 test-utils = { path = "../test-utils/", version = "0.1.0" }
 tokio = { workspace = true, features = ["rt-multi-thread", "parking_lot"] }
-tokio-util = { version = "0.7.14" }
+tokio-util = { version = "0.7.15" }
 
 [dev-dependencies]
 datafusion-proto = { workspace = true }

benchmarks/Cargo.toml

@@ -66,7 +66,7 @@ parquet = { workspace = true, optional = true }
 rand = { workspace = true }
 tempfile = { workspace = true, optional = true }
 tokio = { workspace = true }
-tokio-util = { version = "0.7.14", features = ["io"], optional = true }
+tokio-util = { version = "0.7.15", features = ["io"], optional = true }
 url = { workspace = true }
 xz2 = { version = "0.1", optional = true, features = ["static"] }
 zstd = { version = "0.13", optional = true, default-features = false }