Merge pull request opentripplanner#7454 from opentripplanner/renovate/typescript-6.x

chore(deps): update dependency typescript to v6

Author: leonardehrenfried

client/package-lock.json

@@ -53,8 +53,8 @@
     "globals": "17.4.0",
     "jsdom": "29.0.0",
     "prettier": "3.8.1",
-    "typescript": "5.9.3",
-    "typescript-eslint": "8.57.1",
+    "typescript": "6.0.2",
+    "typescript-eslint": "8.58.0",
     "vite": "8.0.1",
     "vitest": "4.1.0"
   }