Bump RC to 5.16

Adding its Scala and Log4j versions

Author: Mats-SX

gradle/dependencies.gradle

@@ -35,6 +35,7 @@ ext {
         '5.13': '2.13.11',
         '5.14': '2.13.11',
         '5.15': '2.13.11',
+        '5.16': '2.13.11',
     ]
 
     log4js = [
@@ -49,6 +50,7 @@ ext {
         '5.13': '2.20.0',
         '5.14': '2.20.0',
         '5.15': '2.20.0',
+        '5.16': '2.20.0',
     ]
 
     ver = [