chore(deps): update dependency typescript to v4

Author: renovate-bot

package-lock.json

@@ -43,7 +43,7 @@
     "lint-staged": "10.2.11",
     "prettier": "2.0.5",
     "release-it": "13.6.8",
-    "typescript": "3.9.7"
+    "typescript": "4.0.2"
   },
   "dependencies": {
     "@angular-devkit/schematics": "10.0.3",