[Ignore] Bump typescript from 3.3.4000 to 3.4.3 (#1890)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.3.4000 to 3.4.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.3.4000...v3.4.3)

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

Author: dependabot[bot]

package-lock.json

@@ -53,7 +53,7 @@
     "rewire": "~4.0.1",
     "sinon": "~7.3.0",
     "tslint": "~5.14.0",
-    "typescript": "~3.3.4000",
+    "typescript": "~3.4.3",
     "vsce": "~1.59.0",
     "vscode": "~1.1.33"
   },