fix(xo-server/worker): use Bluebird as Promise (#3538)
fix(xo-server/worker): use Bluebird as Promise (#3538)

Similar to 6c6dfa9ac402fb87e452daf3ffca69c388beff71 but for the worker processes.

vatesfr/xo-web,lmcro/xo-web,vatesfr/xo-web,lmcro/xo-web,lmcro/xo-web