Add punicode

package.json

@@ -4,6 +4,7 @@
   "private": true,
   "dependencies": {
     "bootstrap": "4.1.3",
+    "punycode": "^2.1.1",
     "react": "^16.5.1",
     "react-dom": "^16.5.1"
   },

yarn.lock

@@ -5373,7 +5373,7 @@ punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
-punycode@^2.1.0:
+punycode@^2.1.0, punycode@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"