fix: handle sync spawn error

Node http executor uses HTTPS agent. But! Electron http executor allows us to specify protocol in the options and by default uses `http`.  So, we must **always** specify `protocol`.

Close electron-userland#1460

packages/electron-builder-http/src/httpExecutor.ts

@@ -297,6 +297,10 @@ export function configureRequestOptions(options: RequestOptions, token?: string
   if ((method == null || method === "GET") || headers["Cache-Control"] == null) {
     headers["Cache-Control"] = "no-cache"
   }
+
+  if (options.protocol == null) {
+    options.protocol = "https:"
+  }
   return options
 }