fix: upgrade typescript from 4.2.3 to 4.2.4

Snyk has created this PR to upgrade typescript from 4.2.3 to 4.2.4.

See this package in npm:
https://www.npmjs.com/package/typescript

See this project in Snyk:
https://app.snyk.io/org/quittle/project/67e2dc69-f378-4c88-be15-2d127d663877?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -41,7 +41,7 @@
         "prettier": "^2.2.1",
         "ts-jest": "^26.5.4",
         "ts-loader": "^8.1.0",
-        "typescript": "^4.2.3",
+        "typescript": "^4.2.4",
         "webpack": "^5.30.0",
         "webpack-cli": "^4.6.0"
     }