chore(package): update crc to version 3.4.1

https://greenkeeper.io/

package.json

@@ -35,7 +35,7 @@
   },
   "dependencies": {
     "canvas": "^1.3.10",
-    "crc": "~3.4.0",
+    "crc": "~3.4.1",
     "ejs": "^2.3.4",
     "lwip": "~0.0.8",
     "mime": "~1.3.4",