chainable.rbs in httpx-0.18.0

- old
+ new

@@ -30,9 +30,10 @@
               | (:retries, ?options) -> Plugins::sessionRetries
               | (:rate_limiter, ?options) -> Session
               | (:stream, ?options) -> Plugins::sessionStream
               | (:aws_sigv4, ?options) -> Plugins::awsSigV4Session
               | (:grpc, ?options) -> Plugins::grpcSession
+              | (:response_cache, ?options) -> Plugins::sessionResponseCache
               | (Symbol | Module, ?options) { (Class) -> void } -> Session
               | (Symbol | Module, ?options) -> Session
 
     private
 