try to fix appveyor builds
try to fix appveyor builds

gerkirill/phinx,robmorgan/phinx,PinZhang/phinx,stevemarksmonii/phinx,berarma/phinx,daniel-gomes-sociomantic/phinx,BambooHR/phinx-mt,vitormattos/phinx,HavokInspiration/phinx,curtisgibby/phinx,aCodify/phinx,k10r/phinx,jimdoescode/phinx,angelorighi/phinx,lzpfmh/phinx,dancryer/phinx,ikagawa/phinx,dankempster/phinx,igormx/phinx,laurin1/phinx,aCodify/phinx,kamioftea/phinx,lornajane/phinx,DeltaPHP/phinx,rquadling/phinx,castamir/phinx,Thamrongsak/phinx,courtney-miles/phinx