fix: 🐛 revert ArgumentParser version

as ArgumentParser@1.1.4 requires
Xcode 13 (Swift 5.5) => macOS 11.3

this is not wanted as building from source
on lower OS version is desired

Package.resolved

@@ -15,8 +15,8 @@
         "repositoryURL": "https://github.com/apple/swift-argument-parser.git",
         "state": {
           "branch": null,
-          "revision": "9f39744e025c7d377987f30b03770805dcb0bcd1",
-          "version": "1.1.4"
+          "revision": "e394bf350e38cb100b6bc4172834770ede1b7232",
+          "version": "1.0.3"
         }
       },
       {

Package.swift

@@ -15,7 +15,7 @@ let package = Package(
     ],
     dependencies: [
         .package(name: "SourceKitten", url: "https://github.com/jpsim/SourceKitten", from: "0.31.1"),
-        .package(name: "swift-argument-parser", url: "https://github.com/apple/swift-argument-parser.git", from: "1.1.4"),
+        .package(name: "swift-argument-parser", url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "1.0.1")),
         .package(name: "SwiftyBeaver", url: "https://github.com/SwiftyBeaver/SwiftyBeaver.git", .exact("1.9.5")),
     ],
     targets: [

man/README.md

@@ -1,4 +1,4 @@
-The man page in this folder was generated with a Swift Package Plugin from `ArgumentParser`:
+The man page in this folder was generated with a Swift Package Plugin from `ArgumentParser` (1.1.4):
 
 ```bash
 # single page
@@ -11,4 +11,5 @@ The man page will automatically be copied to `/usr/local/share/man/man1/` when r
 
 The reason why the man page is checked-in and not generated during `make install` is that I don't want to make Xcode 13.3 (= Swift 5.6 in which SPM introduced plugins) as a requirement for installation.
 
+**IMPORTANT**: `ArgumentParser@1.1.4` requires Xcode 13 (Swift 5.5) => macOS 11.3+ so if building from source shall be supported for lower platform versions, e.g. macOS 10.5.4, then revert the `Package.swift` and the dependency declaration to `ArgumentParser` once the man page was generated.