Merge pull request #1172 from swiftlang/maxd/bump-argument-parser

Bump `swift-argument-parser` to 1.4.0

Author: shahmishal

Package.swift

@@ -473,7 +473,7 @@ var dependencies: [Package.Dependency] {
       .package(url: "https://github.com/swiftlang/indexstore-db.git", branch: relatedDependenciesBranch),
       .package(url: "https://github.com/swiftlang/swift-package-manager.git", branch: relatedDependenciesBranch),
       .package(url: "https://github.com/apple/swift-tools-support-core.git", branch: relatedDependenciesBranch),
-      .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.2"),
+      .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.4.0"),
       .package(url: "https://github.com/swiftlang/swift-syntax.git", branch: relatedDependenciesBranch),
       .package(url: "https://github.com/apple/swift-crypto.git", from: "3.0.0"),
       // Not a build dependency. Used so the "Format Source Code" command plugin can be used to format sourcekit-lsp