chore(deps): bump tokio-util from 0.6.6 to 0.6.7 (#295)

Bumps [tokio-util](https://github.com/tokio-rs/tokio) from 0.6.6 to 0.6.7.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-util-0.6.6...tokio-util-0.6.7)

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

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

Cargo.lock

@@ -2450,9 +2450,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-util"
-version = "0.6.6"
+version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "940a12c99365c31ea8dd9ba04ec1be183ffe4920102bb7122c2f515437601e8e"
+checksum = "1caa0b0c8d94a049db56b5acf8cba99dc0623aab1b26d5b5f5e2d945846b3592"
 dependencies = [
  "bytes",
  "futures-core",

ethers-providers/Cargo.toml

@@ -39,7 +39,7 @@ tracing-futures = { version = "0.2.5", default-features = false, features = ["st
 # tokio
 tokio = { version = "1.5", default-features = false, optional = true }
 tokio-tungstenite = { version = "0.13.0", default-features = false, features = ["connect", "tls"], optional = true }
-tokio-util = { version = "0.6.6", default-features = false, features = ["io"], optional = true }
+tokio-util = { version = "0.6.7", default-features = false, features = ["io"], optional = true }
 bytes = { version  = "1.0.1", default-features = false, optional = true }
 
 [dev-dependencies]