Bump package versions

... only the latest is the greatest.

Author: helje5

Package.swift

@@ -22,13 +22,13 @@ let package = Package(
     // A lot of packages for demonstration purposes, only add what you
     // actually need in your own project.
     .package(url: "https://github.com/Macro-swift/Macro.git",
-             from: "0.5.5"),
+             from: "0.6.2"),
     .package(url: "https://github.com/Macro-swift/MacroExpress.git",
-             from: "0.5.5"),
+             from: "0.6.1"),
     .package(url: "https://github.com/Macro-swift/MacroLambda.git",
-             from: "0.1.3"),
+             from: "0.2.1"),
     .package(url: "https://github.com/AlwaysRightInstitute/cows",
-             from: "1.0.0")
+             from: "1.0.7")
   ],
 
   targets: [