Attempt to fix case insensitive matching.

Core/Program.cs

@@ -1,3 +1,4 @@
+using System.Globalization;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Hosting;
 
@@ -7,6 +8,8 @@ namespace Kruzya.TelegramBot.Core
     {
         public static void Main(string[] args)
         {
+            CultureInfo.CurrentCulture = new CultureInfo("ru-RU");
+            
             CreateHostBuilder(args).Build().Run();
         }