Bump tokio from 1.3.0 to 1.4.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.3.0...tokio-1.4.0)

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

Cargo.lock

@@ -3693,9 +3693,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d56477f6ed99e10225f38f9f75f872f29b8b8bd8c0b946f63345bb144e9eeda"
+checksum = "134af885d758d645f0f0505c9a8b3f9bf8a348fd822e112ab5248138348f1722"
 dependencies = [
  "autocfg 1.0.1",
  "bytes",