Bump lombok from 1.18.26 to 1.18.28 in /spigot (#98)

Bumps [lombok](https://github.com/projectlombok/lombok) from 1.18.26 to 1.18.28.
- [Release notes](https://github.com/projectlombok/lombok/releases)
- [Changelog](https://github.com/projectlombok/lombok/blob/master/doc/changelog.markdown)
- [Commits](projectlombok/lombok@v1.18.26...v1.18.28)

---
updated-dependencies:
- dependency-name: org.projectlombok:lombok
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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