chore: update zone.js

Author: PatrickJS

package.json

@@ -31,7 +31,7 @@
     "ie-shim": "^0.1.0",
     "reflect-metadata": "^0.1.3",
     "rxjs": "5.0.0-beta.12",
-    "zone.js": "~0.6.23"
+    "zone.js": "~0.6.26"
   },
   "devDependencies": {
     "@types/node": "^6.0.48",