Regenerate package-lock.json to fix security vulnerabilities

package.json

@@ -39,10 +39,10 @@
     "morgan": "^1.9.1"
   },
   "devDependencies": {
-    "xo": "^0.25.3"
+    "xo": "^0.25.4"
   },
   "engines": {
-    "node": ">=8"
+    "node": ">=8.3.0"
   },
   "files": [
     "bin/www",
@@ -54,7 +54,8 @@
     "space": 4,
     "rules": {
       "capitalized-comments": "off",
-      "unicorn/explicit-length-check": "off"
+      "unicorn/explicit-length-check": "off",
+      "unicorn/prevent-abbreviations": "off"
     }
   }
 }