Upgraded to Typescript 4.8.4

Author: cdimitroulas

package-lock.json

@@ -35,7 +35,7 @@
     "prettier": "1.18.2",
     "pretty-quick": "^1.11.1",
     "ts-node": "^9.1.1",
-    "typescript": "^4.3.5",
+    "typescript": "^4.8.4",
     "yargs-parser": "^20.2.7"
   },
   "devDependencies": {