chore(deps-dev): bump typescript from 3.4.1 to 3.4.3 (#377)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.4.1 to 3.4.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.4.1...v3.4.3)

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

package.json

@@ -38,13 +38,13 @@
     "execa": "1.0.0",
     "prettier": "1.17.0",
     "tape": "4.10.1",
-    "typescript": "3.4.1",
+    "typescript": "3.4.3",
     "ybiq": "7.3.0"
   },
   "peerDependencies": {
     "eslint": ">=5.16.0 <6",
     "prettier": ">=1.17.0 <2",
-    "typescript": ">=3.4.1 <4"
+    "typescript": ">=3.4.3 <4"
   },
   "scripts": {
     "lint:js": "eslint --ignore-path .gitignore --ext .js,.jsx,.mjs .",