Allow Android Versions (Impostor#375)

Co-authored-by: js6pak <[email protected]>
Co-authored-by: John Tran <[email protected]>

src/Impostor.Server/Net/Manager/ClientManager.cs

@@ -20,6 +20,7 @@ internal partial class ClientManager
         private static readonly HashSet<int> SupportedVersions = new HashSet<int>
         {
             GameVersion.GetVersion(2021, 3, 25), // 2021.3.31s
+            GameVersion.GetVersion(2021, 4, 2), // 2021.4.2a
         };
 
         private readonly ILogger<ClientManager> _logger;