build(deps-dev): bump typescript from 3.9.7 to 4.0.2

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.7 to 4.0.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.7...v4.0.2)

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

package.json

@@ -70,7 +70,7 @@
         "semantic-release": "^17.0.0",
         "ts-node": "^8.0.3",
         "tslint": "^6.0.0",
-        "typescript": "^3.4.1",
+        "typescript": "^4.0.2",
         "validate-commit-msg": "^2.14.0"
     },
     "dependencies": {