Merge pull request #949 from sfackler/dependabot/cargo/criterion-0.4

Update criterion requirement from 0.3 to 0.4

Author: sfackler

Diff for: postgres/Cargo.toml

@@ -45,5 +45,5 @@ tokio = { version = "1.0", features = ["rt", "time"] }
 log = "0.4"
 
 [dev-dependencies]
-criterion = "0.3"
+criterion = "0.4"
 tokio = { version = "1.0", features = ["rt-multi-thread"] }

Diff for: tokio-postgres/Cargo.toml

@@ -61,7 +61,7 @@ tokio-util = { version = "0.7", features = ["codec"] }
 
 [dev-dependencies]
 futures-executor = "0.3"
-criterion = "0.3"
+criterion = "0.4"
 env_logger = "0.9"
 tokio = { version = "1.0", features = [
     "macros",