Update nuget packages

DiscordChatExporter.Core/DiscordChatExporter.Core.csproj

@@ -14,8 +14,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Newtonsoft.Json" Version="11.0.1" />
+        <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-        <PackageReference Include="Onova" Version="2.0.0" />
+        <PackageReference Include="Onova" Version="2.1.0" />
         <PackageReference Include="Tyrrrz.Extensions" Version="1.5.0" />
         <PackageReference Include="Tyrrrz.Settings" Version="1.3.2" />
     </ItemGroup>

DiscordChatExporter.Core/Services/IUpdateService.cs

@@ -9,6 +9,6 @@ namespace DiscordChatExporter.Core.Services
 
         Task<Version> CheckPrepareUpdateAsync();
 
-        Task FinalizeUpdateAsync();
+        void FinalizeUpdate();
     }
 }

DiscordChatExporter.Core/Services/UpdateService.cs

@@ -39,12 +39,13 @@ namespace DiscordChatExporter.Core.Services
                 return null;
 
             // Prepare the update
+            if (!_manager.IsUpdatePrepared(check.LastVersion))
                 await _manager.PrepareUpdateAsync(check.LastVersion);
 
             return _updateVersion = check.LastVersion;
         }
 
-        public async Task FinalizeUpdateAsync()
+        public void FinalizeUpdate()
         {
             // Check if an update is pending
             if (_updateVersion == null)
@@ -55,7 +56,7 @@ namespace DiscordChatExporter.Core.Services
                 return;
 
             // Launch the updater
-            await _manager.LaunchUpdaterAsync(_updateVersion, NeedRestart);
+            _manager.LaunchUpdater(_updateVersion, NeedRestart);
             _updateFinalized = true;
         }
     }

DiscordChatExporter.Gui/ViewModels/MainViewModel.cs

@@ -143,13 +143,13 @@ namespace DiscordChatExporter.Gui.ViewModels
             }
         }
 
-        private async void ViewClosed()
+        private void ViewClosed()
         {
             // Save settings
             _settingsService.Save();
 
             // Finalize updates if available
-            await _updateService.FinalizeUpdateAsync();
+            _updateService.FinalizeUpdate();
         }
 
         private async void PullData()