Update package.json

Author: Gorniv

package.json

@@ -67,7 +67,7 @@
     "preboot": "6.0.0-beta.1",
     "protractor": "5.3.0",
     "tslint": "5.9.1",
-    "typescript": "2.7.1",
+    "typescript": "2.6.2",
     "uglify-es": "3.3.9"
   }
 }