Bump typescript from 3.9.9 to 4.3.2

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.9 to 4.3.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.9...v4.3.2)

---
updated-dependencies:
- dependency-name: typescript
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -110,7 +110,7 @@
     "eslint-plugin-react-hooks": "^2.5.1",
     "mdx-loader": "^3.0.2",
     "prettier": "^1.19.1",
-    "typescript": "^3.8.3"
+    "typescript": "^4.3.2"
   },
   "homepage": "./"
 }