build(deps): bump kotest from 5.9.1 to 6.0.0

Bumps `kotest` from 5.9.1 to 6.0.0.

Updates `io.kotest:kotest-assertions-core` from 5.9.1 to 6.0.0
- [Release notes](https://github.com/kotest/kotest/releases)
- [Commits](kotest/kotest@v5.9.1...6.0.0)

Updates `io.kotest:kotest-assertions-core-jvm` from 5.9.1 to 6.0.0
- [Release notes](https://github.com/kotest/kotest/releases)
- [Commits](kotest/kotest@v5.9.1...6.0.0)

---
updated-dependencies:
- dependency-name: io.kotest:kotest-assertions-core
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: io.kotest:kotest-assertions-core-jvm
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -37,7 +37,7 @@ openapi = "7.14.0"
 micrometer = "1.15.3"
 detekt = "1.23.8"
 xmlunit = "2.10.3"
-kotest = "5.9.1"
+kotest = "6.0.0"
 reaktive = "2.2.0"
 testcontainers = "1.21.3"
 keycloak = "26.0.6"