Update to 0.3.0 of swift-utilities

I've tested this change locally and it works fine with ffm-build-tools.

Author: cprince-foreflight

Package.swift

@@ -13,7 +13,7 @@ let package = Package(
     ],
     dependencies: [
         // Dependencies declare other packages that this package depends on.
-        .package(url: "https://github.com/gestrich/swift-utilities.git", .upToNextMinor(from: "0.2.0")),
+        .package(url: "https://github.com/gestrich/swift-utilities.git", .upToNextMinor(from: "0.3.0")),
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.