Bump rollup in /frontend-maven-plugin/src/it/example project

Bumps [rollup](https://github.com/rollup/rollup) from 4.53.5 to 4.59.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v4.53.5...v4.59.0)

---
updated-dependencies:
- dependency-name: rollup
  dependency-version: 4.59.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]