remove sendable requirement on input and output type

Author: sebsto

Sources/OpenAPILambda.swift

@@ -21,8 +21,8 @@ import HTTPTypes
 /// A Lambda function implemented with a OpenAPI server (implementing `APIProtocol` from Swift OpenAPIRuntime)
 public protocol OpenAPILambda: Sendable {
 
-    associatedtype Event: Decodable, Sendable
-    associatedtype Output: Encodable, Sendable
+    associatedtype Event: Decodable
+    associatedtype Output: Encodable
 
     /// Initialize application.
     ///