Update copyright year

Author: MailboxValidator

LICENSE.txt

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 MailboxValidator.com
+Copyright (c) 2024 MailboxValidator.com
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -183,4 +183,4 @@ Errors
 Copyright
 =========
 
-Copyright (C) 2018-2023 by MailboxValidator.com, support@mailboxvalidator.com
+Copyright (C) 2018-2024 by MailboxValidator.com, support@mailboxvalidator.com