Update dependency to swift-aws-lambda-runtime main branch

Author: Andrea Scuderi

Package.swift

@@ -27,7 +27,7 @@ let package = Package(
     ],
     dependencies: [
         // TODO: change to upstream once the upstream is tagged
-        .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", from: "2.0.0-beta.1"),
+        .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", branch: "main"),
         .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", from: "0.5.0"),
         .package(url: "https://github.com/swift-server/swift-service-lifecycle.git", from: "2.0.0"),
         .package(url: "https://github.com/soto-project/soto.git", from: "7.0.0"),