Bump tokio from 1.39.3 to 1.40.0 (#47)

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.39.3 to 1.40.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.39.3...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tokio = { version = "1.39.3", features = ["full"] }
+tokio = { version = "1.40.0", features = ["full"] }
 dotenv = "0.15.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"