chore: Bump tokio from 1.20.1 to 1.21.0 (#1170)

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.20.1 to 1.21.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.20.1...tokio-1.21.0)

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

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -18,6 +18,6 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 sqlx = { version = "0.6", features = [ "runtime-tokio-native-tls", "postgres", "uuid", "chrono", "json", "offline", "migrate" ] }
 sqlxmq = "0.4"
-tokio = { version = "1.20", features = ["macros"] }
+tokio = { version = "1.21", features = ["macros"] }
 uuid = "1.1"
 warp = "0.3"

backend/Cargo.toml

@@ -22,7 +22,7 @@ serde = "1.0"
 serde_json = "1.0"
 
 [dependencies.tokio]
-version = "1.16.1"
+version = "1.21.0"
 features = ["macros", "net", "io-util", "rt-multi-thread"]
 
 [profile.release]

cli/Cargo.toml

@@ -31,7 +31,7 @@ serde_json = "1.0.85"
 trust-dns-proto = "0.21.2"
 
 [dev-dependencies]
-tokio = { version = "1.16.1" }
+tokio = { version = "1.21.0" }
 
 [features]
 headless = ["fantoccini", "futures"]