chore: update worker-kv dep version

Author: Steve Manuel

worker/Cargo.toml

@@ -24,6 +24,6 @@ serde_json = "1.0.64"
 url = "2.2.2"
 wasm-bindgen = "0.2.78"
 wasm-bindgen-futures = "0.4.28"
-worker-kv = "0.3.0"
+worker-kv = "0.4.0"
 worker-macros = { path = "../worker-macros", version = "0.0.2" }
 worker-sys = { path = "../worker-sys", version = "0.0.2" }