Added rollup dependency

Author: mattpocock

package-lock.json

@@ -8,6 +8,7 @@
     "@total-typescript/exercise-cli": "^0.11.0",
     "@types/node": "^18.6.5",
     "jsdom": "^25.0.0",
+    "rollup": "^4.34.8",
     "typescript": "^5.6.2",
     "vite-tsconfig-paths": "^5.1.4",
     "vitest": "^3.0.5"
@@ -45,4 +46,4 @@
     "zod": "^3.23.8"
   },
   "type": "module"
-}
+}