🔧 Hide subprocess window

lib/browser/api/auto-updater/squirrel-update-win.js

@@ -34,6 +34,8 @@ var spawnUpdate = function (args, detached, callback) {
     } else if (!spawnedProcess) {
       spawnedProcess = spawn(updateExe, args, {
         detached: detached
+        detached: detached,
+        windowsHide: true
       })
       spawnedArgs = args || []
     }