Update scylla-ami submodule
Update scylla-ami submodule

* dist/ami/files/scylla-ami 61ff5c6...25e101f (1):
  > scylla_install_ami: delete unneeded authorized_keys from AMI image

duarten/scylla,avikivity/scylla,raphaelsc/scylla,scylladb/scylla,raphaelsc/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla,raphaelsc/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla