fix(deps): update dependency xregexp to v4.4.0

Author: renovate-bot

package-lock.json

@@ -13,7 +13,7 @@
     "atom-package-deps": "5.1.0",
     "sax": "1.2.4",
     "xmldoc": "1.1.2",
-    "xregexp": "4.2.4"
+    "xregexp": "4.4.0"
   },
   "devDependencies": {
     "coffeelint": "2.1.0"