Bump to the latest & greatest package versions

Makes sure that things compile w/ Swift 5.5.

Author: helje5

Package.swift

@@ -3,7 +3,7 @@
 import PackageDescription
 
 let package = Package(
-  
+
   name: "MacroExamples",
 
   platforms: [
@@ -25,11 +25,11 @@ 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: "0.8.10"),
+             from: "0.8.11"),
     .package(url: "https://github.com/Macro-swift/MacroExpress.git",
-             from: "0.8.6"),
+             from: "0.8.8"),
     .package(url: "https://github.com/Macro-swift/MacroLambda.git",
-             from: "0.4.0"),
+             from: "0.4.1"),
     .package(url: "https://github.com/AlwaysRightInstitute/cows",
              from: "1.0.7")
   ],