chore(deps-dev): bump rollup from 3.29.4 to 4.21.2

Bumps [rollup](https://github.com/rollup/rollup) from 3.29.4 to 4.21.2.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v3.29.4...v4.21.2)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -59,7 +59,7 @@
     "gulp": "^5.0.0",
     "marked": "^13.0.2",
     "prettier": "^3.3.3",
-    "rollup": "^3.29.4",
+    "rollup": "^4.21.2",
     "rollup-plugin-esbuild": "^5.0.0",
     "rollup-plugin-multi-input": "^1.4.2",
     "rollup-plugin-typescript2": "^0.36.0",