Update to electron-updater 5.2.1

package.json

@@ -18,7 +18,7 @@
         "server": "python ./publish/python.py build start"
     },
     "dependencies": {
-        "electron-updater": "5.0.5"
+        "electron-updater": "5.2.1"
     },
     "devDependencies": {
         "electron": "20.0.0",