Upgrade: acorn 7.1.1, Regex DOS vuln (fixes #435) (#434)

Author: James

package.json

@@ -18,7 +18,7 @@
   },
   "license": "BSD-2-Clause",
   "dependencies": {
-    "acorn": "^7.1.0",
+    "acorn": "^7.1.1",
     "acorn-jsx": "^5.2.0",
     "eslint-visitor-keys": "^1.1.0"
   },