Bump tokio-util from 0.7.8 to 0.7.9 (#1172)

Bumps [tokio-util](https://github.com/tokio-rs/tokio) from 0.7.8 to 0.7.9.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-util-0.7.8...tokio-util-0.7.9)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -4560,9 +4560,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-util"
-version = "0.7.8"
+version = "0.7.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "806fe8c2c87eccc8b3267cbae29ed3ab2d0bd37fca70ab622e46aaa9375ddb7d"
+checksum = "1d68074620f57a0b21594d9735eb2e98ab38b17f80d3fcb189fca266771ca60d"
 dependencies = [
  "bytes",
  "futures-core",

Cargo.toml

@@ -95,7 +95,7 @@ js-sys = "0.3.61"
 wasm-bindgen-futures = "0.4.19"
 futures-timer = "3"
 instant = { version = "0.1.12", default-features = false }
-tokio-util = "0.7.8"
+tokio-util = "0.7.9"
 
 # Substrate crates:
 sp-core = { version = "21.0.0", default-features = false }