[Fastlane.Swift] Swift fastlane does not run on Apple Silicon fastlan…

…e#18502

* [Swift] Fix CI. Package deployment set to macOS 10.12

Package.swift

@@ -1,9 +1,10 @@
-// swift-tools-version:4.0
+// swift-tools-version:5.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
 let package = Package(
     name: "Fastlane",
+    platforms: [.macOS(.v10_12)],
     products: [
         .library(name: "Fastlane", targets: ["Fastlane"])
     ],
@@ -18,6 +19,6 @@ let package = Package(
             exclude: ["Actions.swift", "Plugins.swift", "main.swift", "formatting", "FastlaneSwiftRunner"]
         ),
     ],
-    swiftLanguageVersions: [4]
+    swiftLanguageVersions: [.v4]
 )