Bump typescript from 4.2.3 to 4.2.4 (#671)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.2.3 to 4.2.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v4.2.3...v4.2.4)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -172,7 +172,7 @@
     "ts-loader": "6.2.2",
     "tslint": "5.11.0",
     "tslint-microsoft-contrib": "6.0.0",
-    "typescript": "4.2.3",
+    "typescript": "4.2.4",
     "url-loader": "1.1.1",
     "wait-on": "4.0.2",
     "webpack": "4.43.0",