chore(deps): update dependency typescript to v4.2.3

Author: renovate-bot

package-lock.json

@@ -65,7 +65,7 @@
     "semantic-release": "17.4.2",
     "ts-node": "9.1.1",
     "tslint": "6.1.3",
-    "typescript": "4.1.5"
+    "typescript": "4.2.3"
   },
   "release": {
     "pkgRoot": "dist/rx-form-mapper"