Bump tokio from 1.39.2 to 1.40.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.39.2 to 1.40.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.39.2...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>

Author: dependabot[bot]

Cargo.lock

@@ -24,7 +24,7 @@ sqlx = { version = "0.5", features = [
   "migrate",
   "postgres",
 ] }
-tokio = { version = "1.1.1", features = ["full"] }
+tokio = { version = "1.40.0", features = ["full"] }
 tracing = { version = "0.1.40", features = ["log"] }
 tracing-bunyan-formatter = { version = "0.3.9" }
 tracing-opentelemetry = { version = "0.25.0" }