0.15.0-m3

Bump github.com/onsi/ginkgo/v2 from 2.8.0 to 2.8.3 in /coredns

Bumps [github.com/onsi/ginkgo/v2](https://github.com/onsi/ginkgo) from 2.8.0 to 2.8.3.
- [Release notes](https://github.com/onsi/ginkgo/releases)
- [Changelog](https://github.com/onsi/ginkgo/blob/master/CHANGELOG.md)
- [Commits](https://github.com/onsi/ginkgo/compare/v2.8.0...v2.8.3)

---
updated-dependencies:
- dependency-name: github.com/onsi/ginkgo/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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