Merge pull request #880 from plotly/renovate/react-inspector-3.x

Update dependency react-inspector to v3

Author: dmt0

package.json

@@ -71,7 +71,7 @@
     "react-ace": "6.4.0",
     "react-dom": "16.8.4",
     "react-hot-loader": "4.8.0",
-    "react-inspector": "2.3.1",
+    "react-inspector": "3.0.0",
     "react-test-renderer": "16.8.4",
     "request": "2.88.0",
     "rimraf": "2.6.3",