Merge pull request swiftlang#1578 from swiftlang/maxd/bump-argument-parser

Bump `swift-argument-parser` to 1.4.0

Author: shahmishal

Package.resolved

@@ -165,8 +165,8 @@ if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
     // The 'swift-argument-parser' version declared here must match that
     // used by 'swift-package-manager' and 'sourcekit-lsp'. Please coordinate
     // dependency version changes here with those projects.
-    .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "1.2.2")),
-    ]
+    .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "1.4.0")),
+  ]
 } else {
     package.dependencies += [
         .package(path: "../swift-tools-support-core"),