fix: update flow

Author: JusterZhu

src/c#/GeneralUpdate.ClientCore/GeneralClientOSS.cs

@@ -48,16 +48,13 @@ await Task.Run(() =>
                 var json = JsonSerializer.Serialize(configGlobalConfigInfo, GlobalConfigInfoOSSJsonContext.Default.GlobalConfigInfoOSS);
                 Environments.SetEnvironmentVariable("GlobalConfigInfoOSS", json);
                 Process.Start(appPath);
+                Process.GetCurrentProcess().Kill();
             }
             catch (Exception ex)
             {
                 Debug.WriteLine(ex.Message);
                 throw new Exception(ex.Message + "\n" + ex.StackTrace);
             }
-            finally
-            {
-                Process.GetCurrentProcess().Kill();
-            }
         });
     }