bumped versions in README.adoc

Author: smiklosovic

README.adoc

@@ -24,8 +24,8 @@ There are four implementation modules:
 
 * cassandra-2.2 - builds against version 2.2.19
 * cassandra-3.0 - builds against version 3.0.23
-* cassandra-3.11 - builds against version 3.11.9
-* cassandra-4.0 - builds against version 4.0-beta3
+* cassandra-3.11 - builds against version 3.11.10
+* cassandra-4.0 - builds against version 4.0-beta4
 
 Project is built as: