fix: override toJson for arguments-ordering

Author: incendial

lib/src/analyzers/lint_analyzer/rules/rules_list/arguments_ordering/arguments_ordering_rule.dart

@@ -35,6 +35,14 @@ class ArgumentsOrderingRule extends CommonRule {
           includes: readIncludes(config),
         );
 
+  @override
+  Map<String, Object?> toJson() {
+    final json = super.toJson();
+    json[_ConfigParser._childLast] = _childLast;
+
+    return json;
+  }
+
   @override
   Iterable<Issue> check(InternalResolvedUnitResult source) {
     final visitor = _Visitor(childLast: _childLast);