Bump version to 1.8.9

Author: chsbuffer

Netch/Controllers/UpdateChecker.cs

@@ -20,7 +20,7 @@ public static class UpdateChecker
         public const string Name = @"Netch";
         public const string Copyright = @"Copyright © 2019 - 2021";
 
-        public const string AssemblyVersion = @"1.8.8";
+        public const string AssemblyVersion = @"1.8.9";
         private const string Suffix = @"";
 
         public static readonly string Version = $"{AssemblyVersion}{(string.IsNullOrEmpty(Suffix) ? "" : $"-{Suffix}")}";