chore(deps): update dependency gulp-rename to v2

Author: renovate-bot

package.json

@@ -20,7 +20,7 @@
     "gulp-header": "^1.2.2",
     "gulp-jshint": "^1.9.4",
     "gulp-ng-annotate": "^1.1.0",
-    "gulp-rename": "^1.2.2",
+    "gulp-rename": "2.0.0",
     "gulp-uglify": "^1.4.2",
     "karma": "~0.12.0",
     "karma-chrome-launcher": "^0.1.12",