Bump tokio from 1.6.0 to 1.7.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.6.0...tokio-1.7.0)

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

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

Cargo.lock

@@ -4160,9 +4160,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.6.0"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd3076b5c8cc18138b8f8814895c11eb4de37114a5d127bafdc5e55798ceef37"
+checksum = "c79ba603c337335df6ba6dd6afc38c38a7d5e1b0c871678439ea973cd62a118e"
 dependencies = [
  "autocfg 1.0.1",
  "bytes 1.0.1",