Update dependency apple/swift-argument-parser to from: "1.6.0"

Author: renovate[bot]

Package.swift

@@ -19,7 +19,7 @@ let package = Package(
         ),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-argument-parser", from: "1.5.0"),
+        .package(url: "https://github.com/apple/swift-argument-parser", from: "1.6.0"),
         .package(url: "https://github.com/behrang/YamlSwift.git", from: "3.4.4"),
         .package(url: "https://github.com/jpsim/SourceKitten.git", from: "0.36.0"),
         .package(url: "https://github.com/kylef/PathKit.git", from: "1.0.1"),