Fix: make migration work with new peewee
Fix: make migration work with new peewee

chriszs/redash,guaguadev/redash,ninneko/redash,stefanseifert/redash,hudl/redash,moritz9/redash,jmvasquez/redashtest,amino-data/redash,moritz9/redash,hudl/redash,hudl/redash,ninneko/redash,denisov-vlad/redash,EverlyWell/redash,useabode/redash,alexanderlz/redash,getredash/redash,ninneko/redash,getredash/redash,guaguadev/redash,vishesh92/redash,easytaxibr/redash,imsally/redash,denisov-vlad/redash,vishesh92/redash,crowdworks/redash,crowdworks/redash,jmvasquez/redashtest,akariv/redash,amino-data/redash,44px/redash,amino-data/redash,akariv/redash,denisov-vlad/redash,akariv/redash,44px/redash,alexanderlz/redash,vishesh92/redash,easytaxibr/redash,stefanseifert/redash,easytaxibr/redash,getredash/redash,hudl/redash,akariv/redash,pubnative/redash,akariv/redash,useabode/redash,pubnative/redash,guaguadev/redash,pubnative/redash,guaguadev/redash,chriszs/redash,alexanderlz/redash,denisov-vlad/redash,vishesh92/redash,moritz9/redash,denisov-vlad/redash,EverlyWell/redash,44px/redash,rockwotj/redash,alexanderlz/redash,stefanseifert/redash,EverlyWell/redash,imsally/redash,easytaxibr/redash,M32Media/redash,chriszs/redash,stefanseifert/redash,pubnative/redash,crowdworks/redash,getredash/redash,rockwotj/redash,jmvasquez/redashtest,easytaxibr/redash,getredash/redash,M32Media/redash,amino-data/redash,moritz9/redash,rockwotj/redash,useabode/redash,imsally/redash,ninneko/redash,EverlyWell/redash,guaguadev/redash,M32Media/redash,imsally/redash,44px/redash,rockwotj/redash,pubnative/redash,ninneko/redash,chriszs/redash,M32Media/redash,useabode/redash,stefanseifert/redash,crowdworks/redash,jmvasquez/redashtest,jmvasquez/redashtest