Downgrade electron-updater to 4.3.5.

Newer electron-updater versions are broken on macOS by
electron-userland/electron-builder#5935 as
well as another issue that has not yet been diagnosed.

Signed-off-by: Anders Kaseorg <[email protected]>

Author: andersk

package-lock.json

@@ -153,7 +153,7 @@
     "auto-launch": "^5.0.5",
     "backoff": "^2.5.0",
     "electron-log": "^4.3.5",
-    "electron-updater": "^4.3.9",
+    "electron-updater": "4.3.5",
     "electron-window-state": "^5.0.3",
     "escape-goat": "^3.0.0",
     "get-stream": "^6.0.1",