update to argument parser 1.2.2 (#63521)

* update to argument parser 1.2.0

* Apply suggestions from code review

Author: tomerd

utils/update_checkout/update-checkout-config.json

@@ -96,7 +96,7 @@
                 "llbuild": "main",
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
-                "swift-argument-parser": "1.1.4",
+                "swift-argument-parser": "1.2.2",
                 "swift-atomics": "1.0.2",
                 "swift-collections": "1.0.1",
                 "swift-crypto": "2.2.3",
@@ -423,7 +423,7 @@
                 "llbuild": "main",
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
-                "swift-argument-parser": "1.1.4",
+                "swift-argument-parser": "1.2.2",
                 "swift-atomics": "1.0.2",
                 "swift-collections": "1.0.1",                
                 "swift-crypto": "2.2.3",