update dependencies

app/node_modules/electron-download/lib/arch.js

@@ -0,0 +1,30 @@
+'use strict'
+
+const execSync = require('child_process').execSync
+
+module.exports = {
+  host: function host (quiet) {
+    const arch = process.arch
+    if (arch === 'arm') {
+      switch (process.config.variables.arm_version) {
+        case '6':
+          return module.exports.uname()
+        case '7':
+          return 'armv7l'
+        default:
+          if (!quiet) {
+            console.warn(`WARNING: Could not determine specific ARM arch. Detected ARM version: ${JSON.stringify(process.config.variables.arm_version)}`)
+          }
+      }
+    }
+
+    return arch
+  },
+
+  /**
+   * Returns the arch name from the `uname` utility.
+   */
+  uname: function uname () {
+    return execSync('uname -m').toString().trim()
+  }
+}