fix(deps): update dependency grunt-cli to v1.3.2

Author: renovate[bot]

appengine/grunt/package.json

@@ -18,7 +18,7 @@
     "debug": "3.1.0",
     "express": "4.16.4",
     "grunt": "1.0.2",
-    "grunt-cli": "1.2.0",
+    "grunt-cli": "1.3.2",
     "grunt-contrib-clean": "1.1.0",
     "grunt-contrib-cssmin": "2.2.1",
     "grunt-contrib-jshint": "1.1.0",