Update wekan/releases/up.sh script: Can not build ppc64le version because OpenPower Minicloud is having emergency maintenance.
Update wekan/releases/up.sh script: Can not build ppc64le version because
OpenPower Minicloud is having emergency maintenance.

Thanks to xet7 !

wekan/wekan,wekan/wekan,wekan/wekan,wekan/wekan,wekan/wekan