⬆️ Bump tokio from 1.38.0 to 1.40.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.38.0 to 1.40.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.38.0...tokio-1.40.0)

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

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

Cargo.toml

@@ -111,7 +111,7 @@ futures = { version = "0.3.5", default-features = false, features = ["std"] }
 futures-intrusive = "0.5"
 futures-util = { version = "0.3.5", default-features = false, features = ["std"] }
 async-trait = "0.1.80"
-tokio = { version = "1.28", features = [
+tokio = { version = "1.40", features = [
   "time",
   "rt",
   "signal",