Use newest swift-nio version (#557)

`swift-nio` has defined a new method `collect(upTo:into:)` on `AsyncSequence` which we use in our examples.

Author: dnadoba

Examples/Package.swift

@@ -29,7 +29,7 @@ let package = Package(
         .executable(name: "StreamingByteCounter", targets: ["StreamingByteCounter"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-nio.git", .branch("main")),
+        .package(url: "https://github.com/apple/swift-nio.git", from: "2.38.0"),
 
         // in real-world projects this would be
         // .package(url: "https://github.com/swift-server/async-http-client.git", from: "1.9.0")

Package.swift

@@ -21,7 +21,7 @@ let package = Package(
         .library(name: "AsyncHTTPClient", targets: ["AsyncHTTPClient"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-nio.git", from: "2.36.0"),
+        .package(url: "https://github.com/apple/swift-nio.git", from: "2.38.0"),
         .package(url: "https://github.com/apple/swift-nio-ssl.git", from: "2.14.1"),
         .package(url: "https://github.com/apple/swift-nio-http2.git", from: "1.19.0"),
         .package(url: "https://github.com/apple/swift-nio-extras.git", from: "1.10.0"),