Update `ch.qos.logback:logback-classic` to version `1.5.16` (#257)

log4j-samples-graalvm/pom.xml

diff --git a/log4j-samples-graalvm/pom.xml b/log4j-samples-graalvm/pom.xml
index 094624a..d4cb034 100644
--- a/log4j-samples-graalvm/pom.xml
+++ b/log4j-samples-graalvm/pom.xml
@@ -64,7 +64,7 @@
     <json-unit.version>4.1.0</json-unit.version>
     <junit.version>5.11.4</junit.version>
     <log4j.version>2.25.0-SNAPSHOT</log4j.version>
-    <logback.version>1.5.15</logback.version>
+    <logback.version>1.5.16</logback.version>
     <slf4j.version>2.0.16</slf4j.version>
 
     <!-- IT to run for each profile -->