Bump swift-argument-parser to 1.3.1

rdar://118081439

Author: MaxDesiatov

Package.resolved

@@ -165,7 +165,7 @@ 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: "1.3.1")),
     ]
 } else {
     package.dependencies += [