Bump org.mock-server:mockserver-netty from 3.10.8 to 5.15.0

Bumps [org.mock-server:mockserver-netty](https://github.com/jamesdbloom/mockservice) from 3.10.8 to 5.15.0.
- [Changelog](https://github.com/mock-server/mockserver/blob/master/changelog.md)
- [Commits](mock-server/mockserver@mockserver-3.10.8...mockserver-5.15.0)

---
updated-dependencies:
- dependency-name: org.mock-server:mockserver-netty
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ prettier4j = "0.1.1"
 maven-resolver-provider = "3.8.6"
 maven-resolver = "1.9.2"
 slf4j = "1.7.36"
-mockserver = "3.10.8"
+mockserver = "5.15.0"
 compile-testing = "0.21.0"
 json-schema = "1.12.1"
 shadow = "8.3.5"