I have clones that I want to promote to real filesystems

testing change

My goals:

* data01/testing/dev-pgeu becomes a non-clone
* keep data01/testing/12.0-RELEASE
* remove snapshot data01/testing/12.0-RELEASE@dev-pgeu 

[dan@r720-01:~] $ sudo zfs create data01/testing
[dan@r720-01:~] $ sudo zfs create data01/testing/12.0-RELEASE
[dan@r720-01:~] $ sudo zfs snapshot data01/testing/12.0-RELEASE@dev-pgeu

[dan@r720-01:~] $ sudo zfs clone data01/testing/12.0-RELEASE@dev-pgeu data01/testing/dev-pgeu

[dan@r720-01:~] $ zfs list -r data01/testing
NAME                          USED  AVAIL  REFER  MOUNTPOINT
data01/testing                176K  1.18T    88K  /data01/testing
data01/testing/12.0-RELEASE    88K  1.18T    88K  /data01/testing/12.0-RELEASE
data01/testing/dev-pgeu          0  1.18T    88K  /data01/testing/dev-pgeu
[dan@r720-01:~] $ 


[dan@r720-01:~] $ zfs list -r -t snapshot data01/testing
NAME                                   USED  AVAIL  REFER  MOUNTPOINT
data01/testing/12.0-RELEASE@dev-pgeu      0      -    88K  -


[dan@r720-01:~] $ sudo zfs destroy data01/testing/12.0-RELEASE@dev-pgeu
cannot destroy 'data01/testing/12.0-RELEASE@dev-pgeu': snapshot has dependent clones
use '-R' to destroy the following datasets:
data01/testing/dev-pgeu
[dan@r720-01:~] $ 

[dan@r720-01:~] $ sudo zfs promote data01/testing/dev-pgeu

[dan@r720-01:~] $ zfs list -r -t snapshot data01/testing
NAME                                                                  USED  AVAIL  REFER  MOUNTPOINT
data01/testing/dev-pgeu@dev-pgeu                                         0      -    88K  -
[dan@r720-01:~] $ 


[dan@r720-01:~] $ sudo zfs destroy data01/testing/dev-pgeu@dev-pgeu
cannot destroy 'data01/testing/dev-pgeu@dev-pgeu': snapshot has dependent clones
use '-R' to destroy the following datasets:
data01/testing/12.0-RELEASE
[dan@r720-01:~] $ 


How can I get rid of that snapshot without destroying data01/testing/12.0-RELEASE?