fix(deps): update logback packages to v1.5.12 (#516)

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

Author: renovate[bot]

log-appender/build.gradle.kts

@@ -16,8 +16,8 @@ java {
 dependencies {
     // Slf4J / logback
     implementation("org.slf4j:slf4j-api:2.0.16")
-    implementation("ch.qos.logback:logback-core:1.5.11")
-    implementation("ch.qos.logback:logback-classic:1.5.11")
+    implementation("ch.qos.logback:logback-core:1.5.12")
+    implementation("ch.qos.logback:logback-classic:1.5.12")
 
     // JUL to SLF4J bridge
     implementation("org.slf4j:jul-to-slf4j:2.0.16")