Bump org.junit.platform:junit-platform-testkit in /modules/spock

Bumps [org.junit.platform:junit-platform-testkit](https://github.com/junit-team/junit5) from 1.11.0 to 1.12.0.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](https://github.com/junit-team/junit5/commits)

---
updated-dependencies:
- dependency-name: org.junit.platform:junit-platform-testkit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

modules/spock/build.gradle

@@ -18,7 +18,7 @@ dependencies {
     testRuntimeOnly 'org.postgresql:postgresql:42.7.4'
     testRuntimeOnly 'mysql:mysql-connector-java:8.0.33'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.10.3'
-    testRuntimeOnly 'org.junit.platform:junit-platform-testkit:1.11.0'
+    testRuntimeOnly 'org.junit.platform:junit-platform-testkit:1.12.0'
 
     testCompileOnly 'org.jetbrains:annotations:24.1.0'
 }