Merge branch 'cassandra-4.0' into cassandra-4.1

Author: smiklosovic

build.xml

@@ -359,7 +359,7 @@
         windowtitle="${ant.project.name} API" classpathref="cassandra.classpath"
         bottom="Copyright © 2009- The Apache Software Foundation"
         useexternalfile="yes" encoding="UTF-8" failonerror="false"
-        maxmemory="256m" additionalparam="${jdk11-javadoc-exports}">
+        maxmemory="1024m" additionalparam="${jdk11-javadoc-exports}">
         <filesets/>
       </javadoc>
       <fail message="javadoc failed">