Update versions on website

Author: ppkarwasz

pom.xml

@@ -339,9 +339,9 @@
     <site-conversant.version>1.2.21</site-conversant.version>
     <site-flume.version>1.11.0</site-flume.version>
     <site-je.version>18.3.12</site-je.version>
-    <site-log4j-core.version>3.0.0-beta2</site-log4j-core.version>
+    <site-log4j-core.version>3.0.0-beta3</site-log4j-core.version>
     <site-log4j-jakarta.version>3.0.0-alpha1</site-log4j-jakarta.version>
-    <site-log4j-layout-template-json.version>3.0.0-beta2</site-log4j-layout-template-json.version>
+    <site-log4j-layout-template-json.version>3.0.0-beta3</site-log4j-layout-template-json.version>
     <site-logback.version>1.5.12</site-logback.version>
     <site-slf4j.version>2.0.16</site-slf4j.version>