chore(dependencies): Bump typescript from 2.6.1 to 2.6.2

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 2.6.1 to 2.6.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases/tag/v2.6.2)
- [Commits](microsoft/TypeScript@v2.6.1...v2.6.2)

Author: dependabot[bot]

package-lock.json

@@ -24,7 +24,7 @@
     "awesome-typescript-loader": "^3.4.0",
     "source-map-loader": "^0.2.3",
     "tape": "^4.8.0",
-    "typescript": "^2.6.1",
+    "typescript": "^2.6.2",
     "webpack": "^3.8.1",
     "webpack-node-externals": "^1.6.0"
   }