Update tools/python3 submodule
Update tools/python3 submodule

* tools/python3 6f3bcbe...ad04e8e (2):
  > dist/debian: fix renaming debian/scylla-* files rule
  > fix license of package build script to AGPL

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