Bump org.springframework.boot:spring-boot-starter-test

Bumps [org.springframework.boot:spring-boot-starter-test](https://github.com/spring-projects/spring-boot) from 3.0.5 to 3.0.6.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v3.0.5...v3.0.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-test
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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