chore: remove unused rollup dependencies

- Remove all @rollup/* plugin dependencies and rollup itself
- Project now uses simple TypeScript compilation (tsc) only
- Update model bundle timestamp

package.json

@@ -134,11 +134,6 @@
     "OFFLINE_MODELS.md"
   ],
   "devDependencies": {
-    "@rollup/plugin-commonjs": "^25.0.7",
-    "@rollup/plugin-json": "^6.1.0",
-    "@rollup/plugin-node-resolve": "^15.2.3",
-    "@rollup/plugin-replace": "^5.0.5",
-    "@rollup/plugin-typescript": "^11.1.6",
     "@types/express": "^5.0.3",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^20.11.30",
@@ -153,8 +148,6 @@
     "jsdom": "^26.1.0",
     "node-fetch": "^3.3.2",
     "puppeteer": "^22.15.0",
-    "rollup": "^4.13.0",
-    "@rollup/plugin-terser": "^0.4.4",
     "standard-version": "^9.5.0",
     "tslib": "^2.6.2",
     "typescript": "^5.4.5",