fix(deps): update dependency grunt-contrib-watch to v1.1.0

Author: renovate[bot]

appengine/grunt/package.json

@@ -22,7 +22,7 @@
     "grunt-contrib-clean": "1.1.0",
     "grunt-contrib-cssmin": "2.2.1",
     "grunt-contrib-jshint": "1.1.0",
-    "grunt-contrib-watch": "1.0.0",
+    "grunt-contrib-watch": "1.1.0",
     "morgan": "1.9.0",
     "pug": "2.0.0",
     "serve-favicon": "2.4.5"