chore(deps): update dependency typescript to v2.8.3

Author: renovate-bot

package.json

@@ -46,7 +46,7 @@
     "tslint-config-prettier-ext": "1.5.0",
     "tslint-plugin-prettier": "1.3.0",
     "typedoc": "0.11.1",
-    "typescript": "2.5.3"
+    "typescript": "2.8.3"
   },
   "peerDependencies": {
     "dts-element": "^2.2.0"

yarn.lock

@@ -3725,14 +3725,14 @@ [email protected]:
     typedoc-default-themes "^0.5.0"
     typescript "2.7.2"
 
-[email protected]:
-  version "2.5.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.5.3.tgz#df3dcdc38f3beb800d4bc322646b04a3f6ca7f0d"
-
 [email protected]:
   version "2.7.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
 
+[email protected]:
+  version "2.8.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.3.tgz#5d817f9b6f31bb871835f4edf0089f21abe6c170"
+
 typescript@~2.4.1:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.2.tgz#f8395f85d459276067c988aa41837a8f82870844"