Fix CI build: add missing JUnit Platform launcher dependency

[Copilot]

Gradle 8.x no longer auto-includes the JUnit Platform launcher on the test classpath, causing the test task to fail with Failed to load JUnit Platform.

Change

• Added org.junit.platform:junit-platform-launcher:1.9.2 as testRuntimeOnly in build.gradle.kts, matching the existing JUnit Jupiter 5.9.2 version family.

testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.9.2")
testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.9.2")

[pahjbo]

surely the launcher version should be 5.9.2 to fix this?

[pahjbo]

@copilot surely the launcher version should be 5.9.2 to match other components

[Copilot]

The junit-platform-launcher artifact uses 1.x versioning, not 5.x. JUnit Platform 1.9.2 and JUnit Jupiter 5.9.2 are released together as part of the same JUnit 5.9.2 release train — they are already aligned. There is no 5.9.2 version of junit-platform-launcher.

[Copilot]

The junit-platform-launcher artifact uses 1.x versioning, not 5.x. JUnit Platform 1.9.2 and JUnit Jupiter 5.9.2 are released together as part of the same JUnit 5.9.2 release train — they are already aligned. There is no 5.9.2 version of junit-platform-launcher.