fix: readd dmg-builder as a resolution instead of root package

package.json

@@ -186,6 +186,7 @@
     "concurrently": "^7.4.0",
     "cross-env": "^6.0.3",
     "css-loader": "^6.7.2",
+    "dmg-builder": "23.6.0",
     "electron": "^17.2.0",
     "electron-builder": "22.8.0",
     "electron-notarize": "^0.2.0",

ts/updater/updater.ts

@@ -110,7 +110,7 @@ async function checkForUpdates(
 
     logger.info('[updater] checkForUpdates got github response back ');
 
-    if (!result.updateInfo) {
+    if (!result?.updateInfo) {
       logger.info('[updater] no update info received');
 
       return;