Revert bump in rufus-scheduler
Revert bump in rufus-scheduler

Somehow `bundle install` with an update to Sidekiq-cron caused
rufus-scheduler to be bumped, when it doesn't appear absolutely
necessary.

Closes #25160

htve/GitlabForChinese,axilleas/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,openwide-java/gitlabhq,openwide-java/gitlabhq,LUMC/gitlabhq,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq,dreampet/gitlab,LUMC/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,darkrasid/gitlabhq,darkrasid/gitlabhq,iiet/iiet-git,openwide-java/gitlabhq,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,jirutka/gitlabhq,dplarson/gitlabhq,LUMC/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,openwide-java/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,htve/GitlabForChinese,dplarson/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,LUMC/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese