test: bump version of async-stream (#5347)

Author: loyd

tokio-test/Cargo.toml

@@ -19,7 +19,7 @@ categories = ["asynchronous", "testing"]
 [dependencies]
 tokio = { version = "1.2.0", path = "../tokio", features = ["rt", "sync", "time", "test-util"] }
 tokio-stream = { version = "0.1.1", path = "../tokio-stream" }
-async-stream = "0.3"
+async-stream = "0.3.3"
 
 bytes = "1.0.0"
 futures-core = "0.3.0"