Update slf4j monorepo to v2.0.16

Author: renovate[bot]

pom.xml

@@ -9,7 +9,7 @@
     <version>1.0</version>
 
     <properties>
-        <slf4j-api.version>2.0.13</slf4j-api.version>
+        <slf4j-api.version>2.0.16</slf4j-api.version>
         <javalin.version>6.2.0</javalin.version>
     </properties>
     <build>