Fixes for StrictEmailAddressAttribute (#1474)

* Use StrictEmail validation for changing email

* Add trailing symbols to illegal chars in emails

* Add semicolon as always illegal

* Replace regex with MimeKit parsing, add unit test

* Add more unit tests

* Fix linting

src/Core/Models/Api/Request/Accounts/EmailTokenRequestModel.cs

@@ -1,11 +1,12 @@
 using System.ComponentModel.DataAnnotations;
+using Bit.Core.Utilities;
 
 namespace Bit.Core.Models.Api
 {
     public class EmailTokenRequestModel
     {
         [Required]
-        [EmailAddress]
+        [StrictEmailAddress]
         [StringLength(256)]
         public string NewEmail { get; set; }
         [Required]