update package-lock file after fontawesome upgrade

www/static/package-lock.json

@@ -4,6 +4,11 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@fortawesome/fontawesome-free": {
+      "version": "5.12.0",
+      "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.12.0.tgz",
+      "integrity": "sha512-vKDJUuE2GAdBERaQWmmtsciAMzjwNrROXA5KTGSZvayAsmuTGjam5z6QNqNPCwDfVljLWuov1nEC3mEQf/n6fQ=="
+    },
     "@mapbox/leaflet-omnivore": {
       "version": "0.3.4",
       "resolved": "https://registry.npmjs.org/@mapbox/leaflet-omnivore/-/leaflet-omnivore-0.3.4.tgz",