chore(deps): update dependency typescript to v2.7.1

Author: renovate-bot

package.json

@@ -47,7 +47,7 @@
     "tslint-config-ikatyang": "2.5.1",
     "tslint-config-prettier": "1.6.0",
     "tslint-plugin-prettier": "1.3.0",
-    "typescript": "2.5.3",
+    "typescript": "2.7.1",
     "yeoman-test": "1.7.0"
   },
   "engines": {

yarn.lock

@@ -3763,9 +3763,9 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.5.3:
-  version "2.5.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.5.3.tgz#df3dcdc38f3beb800d4bc322646b04a3f6ca7f0d"
+typescript@2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.1.tgz#bb3682c2c791ac90e7c6210b26478a8da085c359"
 
 uglify-js@^2.6:
   version "2.8.29"