build: update dependency typescript to v3

Author: renovate-bot

package.json

@@ -77,6 +77,6 @@
     "tsickle": ">=0.25.5",
     "tslib": "^1.7.1",
     "tslint": "~5.11.0",
-    "typescript": "2.9.2"
+    "typescript": "3.1.2"
   }
 }

yarn.lock

@@ -6451,7 +6451,11 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-[email protected], "typescript@>=2.6.2 <2.10", typescript@~2.9.1:
+[email protected]:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.2.tgz#c03a5d16f30bb60ad8bb6fe8e7cb212eedeec950"
+
+"typescript@>=2.6.2 <2.10", typescript@~2.9.1:
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"