Update slf4j monorepo to v2.0.16 (#568)

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

pom.xml

@@ -82,7 +82,7 @@
     <pac4j.version>5.7.6</pac4j.version>
     <java.version>11</java.version>
 
-    <slf4j.version>2.0.15</slf4j.version>
+    <slf4j.version>2.0.16</slf4j.version>
     <log4j.version>1.2.17</log4j.version>
 
     <mockito.version>5.12.0</mockito.version>