chore(deps-dev): bump typescript from 3.9.7 to 4.0.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.7 to 4.0.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.7...v4.0.3)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -76,7 +76,7 @@
     "react": "^16.0.0",
     "react-dom": "^16.0.0",
     "react-test-renderer": "^16.0.0",
-    "typescript": "^3.9.0"
+    "typescript": "^4.0.3"
   },
   "cnpm": {
     "mode": "npm"