Update tools/java submodule
Update tools/java submodule

* tools/java 4a55b81941...78c8ef4f54 (1):
  > nodetool: do no treat table name with dot as a secondary index

Fixes #6521.

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla