Merge pull request #247 from apple/nate/update_argumentparser_0.3.1

Update swift-argument-parser dependency

Author: natecook1000

Package.resolved

@@ -82,7 +82,10 @@ if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
   package.dependencies += [
     .package(url: "https://github.com/apple/swift-tools-support-core.git", .branch("master")),
     .package(url: "https://github.com/jpsim/Yams.git", .upToNextMinor(from: "4.0.0")),
-    .package(url: "https://github.com/apple/swift-argument-parser.git", .exact("0.3.0"))
+    // 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: "0.3.1")),
     ]
 } else {
     package.dependencies += [