Fix manifest versions (#197)

Ensure we specify the correct version of AHC we need

Author: 0xTim

Package.swift

@@ -19,7 +19,7 @@ let package = Package(
     dependencies: [
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-crypto.git", "1.0.0"..<"4.0.0"),
-        .package(url: "https://github.com/swift-server/async-http-client.git", from: "1.10.0"),
+        .package(url: "https://github.com/swift-server/async-http-client.git", from: "1.19.0"),
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.42.0"),
         .package(url: "https://github.com/apple/swift-nio-ssl.git", from: "2.6.0"),