Update slf4j monorepo to v2.0.16 (#462)

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

Author: renovate[bot]

log-appender/build.gradle.kts

@@ -15,12 +15,12 @@ java {
 
 dependencies {
     // Slf4J / logback
-    implementation("org.slf4j:slf4j-api:2.0.15")
+    implementation("org.slf4j:slf4j-api:2.0.16")
     implementation("ch.qos.logback:logback-core:1.5.6")
     implementation("ch.qos.logback:logback-classic:1.5.6")
 
     // JUL to SLF4J bridge
-    implementation("org.slf4j:jul-to-slf4j:2.0.15")
+    implementation("org.slf4j:jul-to-slf4j:2.0.16")
 
     // Log4j
     implementation(platform("org.apache.logging.log4j:log4j-bom:2.23.1"))