fix(deps): update logback monorepo to v1.5.21 (#528)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle.kts

@@ -27,8 +27,8 @@ dependencies {
     implementation("info.picocli:picocli:4.7.7")
 
     implementation("org.slf4j:slf4j-api:2.0.17")
-    implementation("ch.qos.logback:logback-classic:1.5.18")
-    implementation("ch.qos.logback:logback-core:1.5.18")
+    implementation("ch.qos.logback:logback-classic:1.5.21")
+    implementation("ch.qos.logback:logback-core:1.5.21")
 
     implementation("com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.20.1")
     implementation("com.fasterxml.jackson.core:jackson-databind:2.20.1")