chore(deps-dev): bump typescript from 3.3.4000 to 3.4.1

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.3.4000 to 3.4.1.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.3.4000...v3.4.1)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

package-lock.json

@@ -87,7 +87,7 @@
     "travis-deploy-once": "5.0.11",
     "tslint": "5.14.0",
     "typedoc": "0.14.2",
-    "typescript": "3.3.4000"
+    "typescript": "3.4.1"
   },
   "dependencies": {
     "request": "2.88.0"