Update dependency typescript to v4

Author: renovate-bot

src/package.json

@@ -44,7 +44,7 @@
         "jasmine": "3.6.1",
         "jasmine-node": "3.0.0",
         "ts-node": "8.10.2",
-        "typescript": "3.9.7"
+        "typescript": "4.0.5"
     },
     "dependencies": {
         "@angular-devkit/architect": "^0.1000.0",