Upgrade TypeScript to version ^5.8.3 in package.json.

frontend/package.json

@@ -41,6 +41,6 @@
     "karma-coverage": "~2.2.0",
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.1.0",
-    "typescript": "~5.7.2"
+    "typescript": "^5.8.3"
   }
 }