chore(deps): Upgrade react-dev-utils to non-vulnerable version (#2061)

Author: Luke Bowerman

package.json

@@ -114,6 +114,7 @@
     "prismjs": ">= 1.23.0",
     "react": "16.14.0",
     "react-dom": "16.14.0",
+    "react-dev-utils": "11.0.4",
     "socket.io": "2.4.0"
   },
   "lint-staged": {