Bump kotlin-gradle-plugin from 1.5.21 to 1.5.30

Bumps [kotlin-gradle-plugin](https://github.com/JetBrains/kotlin) from 1.5.21 to 1.5.30.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.5.21...v1.5.30

)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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