enable disposing ITypeResolver

src/Spectre.Console/Cli/Internal/CommandExecutor.cs

@@ -76,7 +76,7 @@ namespace Spectre.Console.Cli
             _registrar.RegisterInstance(typeof(IRemainingArguments), parsedResult.Remaining);
 
             // Create the resolver and the context.
-            var resolver = new TypeResolverAdapter(_registrar.Build());
+            using var resolver = new TypeResolverAdapter(_registrar.Build());
             var context = new CommandContext(parsedResult.Remaining, leaf.Command.Name, leaf.Command.Data);
 
             // Execute the command tree.

src/Spectre.Console/Cli/Internal/TypeResolverAdapter.cs

@@ -2,7 +2,7 @@ using System;
 
 namespace Spectre.Console.Cli
 {
-    internal sealed class TypeResolverAdapter : ITypeResolver
+    internal sealed class TypeResolverAdapter : ITypeResolver, IDisposable
     {
         private readonly ITypeResolver? _resolver;
 
@@ -43,5 +43,13 @@ namespace Spectre.Console.Cli
                 throw CommandRuntimeException.CouldNotResolveType(type, ex);
             }
         }
+
+        public void Dispose()
+        {
+            if (_resolver is IDisposable disposable)
+            {
+                disposable.Dispose();
+            }
+        }
     }
 }