Update to electron-updater 4.2.4

package.json

@@ -18,7 +18,7 @@
     "dependencies": {
         "d3": "5.15.0",
         "dagre": "0.8.5",
-        "electron-updater": "4.2.2",
+        "electron-updater": "4.2.4",
         "flatbuffers": "1.11.0",
         "long": "4.0.0",
         "marked": "0.8.0",