Merge pull request #2520 from atom/dependabot/npm_and_yarn/electron-devtools-installer-3.1.1

⬆️ Bump electron-devtools-installer from 2.2.4 to 3.1.1

Author: smashwilson

package-lock.json

@@ -84,7 +84,7 @@
     "chai-as-promised": "7.1.1",
     "cross-unzip": "0.2.1",
     "dedent-js": "1.0.1",
-    "electron-devtools-installer": "2.2.4",
+    "electron-devtools-installer": "3.1.1",
     "electron-link": "0.4.3",
     "electron-mksnapshot": "^9.0.2",
     "enzyme": "3.10.0",