Bump slf4j version (2.0.9 → 2.0.16)

Author: irotech

yoti-sdk-parent/pom.xml

@@ -88,7 +88,7 @@
     <supported.java.release.version>8</supported.java.release.version>
 
     <!-- sdk dependency versions -->
-    <slf4j.version>2.0.9</slf4j.version>
+    <slf4j.version>2.0.16</slf4j.version>
     <bouncycastle.version>1.81</bouncycastle.version>
     <jackson.version>2.19.0</jackson.version>
     <protobuf-java.version>3.25.8</protobuf-java.version>