Bump org.spockframework:spock-core

Bumps [org.spockframework:spock-core](https://github.com/spockframework/spock) from 2.4-M2-groovy-4.0 to 2.4-M4-groovy-4.0.
- [Release notes](https://github.com/spockframework/spock/releases)
- [Changelog](https://github.com/spockframework/spock/blob/master/docs/release_notes.adoc)
- [Commits](https://github.com/spockframework/spock/commits)

---
updated-dependencies:
- dependency-name: org.spockframework:spock-core
  dependency-type: direct:production
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -15,6 +15,6 @@ slf4j-api = { module = "org.slf4j:slf4j-api", version = "2.0.12" }
 jetbrains-annotations = { module = "org.jetbrains:annotations", version = "24.1.0" }
 quark-eventbus = { module = "com.coditory.quark:quark-eventbus", version = "0.0.5" }
 # test dependencies
-spock-core = { module = "org.spockframework:spock-core", version = "2.4-M2-groovy-4.0" }
+spock-core = { module = "org.spockframework:spock-core", version = "2.4-M4-groovy-4.0" }
 logback-classic = { module = "ch.qos.logback:logback-classic", version = "1.5.3" }
 jsonassert = { module = "org.skyscreamer:jsonassert", version = "1.5.1" }