Update versions of dependencies

Author: Mingun

Cargo.toml

@@ -15,16 +15,16 @@ license = "MIT"
 document-features = { version = "0.2", optional = true }
 encoding_rs = { version = "0.8", optional = true }
 serde = { version = "1.0", optional = true }
-tokio = { version = "1.20", optional = true, default-features = false, features = ["io-util"] }
+tokio = { version = "1.21", optional = true, default-features = false, features = ["io-util"] }
 memchr = "2.5"
 
 [dev-dependencies]
-criterion = "0.3"
-pretty_assertions = "1.2"
+criterion = "0.4"
+pretty_assertions = "1.3"
 regex = "1"
 serde = { version = "1.0", features = ["derive"] }
 serde-value = "0.7"
-tokio = { version = "1.20", default-features = false, features = ["macros", "rt"] }
+tokio = { version = "1.21", default-features = false, features = ["macros", "rt"] }
 tokio-test = "0.4"
 
 [lib]