Chore: upgrade dependencies

Author: mysticatea

package.json

@@ -31,7 +31,7 @@
   "dependencies": {
     "ansi-styles": "^3.2.0",
     "chalk": "^2.1.0",
-    "cross-spawn": "^5.1.0",
+    "cross-spawn": "^6.0.4",
     "memorystream": "^0.3.1",
     "minimatch": "^3.0.4",
     "ps-tree": "^1.1.0",