fix(deps): update dependency ch.qos.logback:logback-classic to v1.5.21

Author: renovate[bot]

workload/build.gradle.kts

@@ -35,7 +35,7 @@ dependencies {
 
     // Kotlin logging dependencies
     implementation("io.github.oshai:kotlin-logging-jvm:7.0.13")
-    implementation("ch.qos.logback:logback-classic:1.5.19")
+    implementation("ch.qos.logback:logback-classic:1.5.21")
 
     // kotlin-logging-extensions (using project dependency for development)
     ksp(project(":processor"))