Bump rollup from 2.28.1 to 2.28.2 in /token-swap/js (solana-labs#533)

Bumps [rollup](https://github.com/rollup/rollup) from 2.28.1 to 2.28.2.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.28.1...v2.28.2)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>