Bump ch.qos.logback:logback-classic from 1.5.6 to 1.5.8 in /router

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.5.6 to 1.5.8.
- [Commits](qos-ch/logback@v_1.5.6...v_1.5.8)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

router/build.gradle.kts

@@ -16,5 +16,5 @@ dependencies {
     testImplementation("com.willowtreeapps.assertk:assertk-jvm:0.28.1")
     testImplementation("org.assertj:assertj-core:3.26.0")
     testImplementation("io.mockk:mockk:1.13.11")
-    testImplementation("ch.qos.logback:logback-classic:1.5.6")
+    testImplementation("ch.qos.logback:logback-classic:1.5.8")
 }