Bump org.junit:junit-bom from 5.10.2 to 5.10.3

Bumps [org.junit:junit-bom](https://github.com/junit-team/junit5) from 5.10.2 to 5.10.3.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.10.2...r5.10.3)

---
updated-dependencies:
- dependency-name: org.junit:junit-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -75,7 +75,7 @@ subprojects { Project sub ->
         testImplementation project.deps.gocdPluginApi
         testImplementation 'org.mockito:mockito-core:5.12.0'
         testImplementation group: 'org.assertj', name: 'assertj-core', version: '3.26.0'
-        testImplementation platform('org.junit:junit-bom:5.10.2')
+        testImplementation platform('org.junit:junit-bom:5.10.3')
         testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api'
         testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine'
         testRuntimeOnly group: 'org.junit.platform', name: 'junit-platform-launcher'