fix: lock typescript version

Author: BelfordZ

package-lock.json

@@ -37,7 +37,7 @@
     "ts-jest": "^24.3.0",
     "tslint": "^6.1.3",
     "typedoc": "^0.20.36",
-    "typescript": "^4.0.3",
+    "typescript": "4.2.4",
     "webpack": "^5.38.1",
     "webpack-cli": "^4.7.2"
   },