Update UPGRADE file with changes due to locales handling
Update UPGRADE file with changes due to locales handling

101medialab/Sylius,gorkalaucirica/Sylius,venyii/Sylius,psren/Sylius,GSadee/Sylius,CoderMaggie/Sylius,Pitoune/Sylius,venyii/Sylius,kayue/Sylius,Mozan/Sylius,DorianCMore/Sylius,bretto36/Sylius,pjedrzejewski/Sylius,NeverResponse/Sylius,ktzouno/Sylius,mheki/Sylius,dragosprotung/Sylius,psren/Sylius,foobarflies/Sylius,ezecosystem/Sylius,TheMadeleine/Sylius,bretto36/Sylius,Joypricecorp/Sylius,gabiudrescu/Sylius,regnisolbap/Sylius,Niiko/Sylius,diimpp/Sylius,Joypricecorp/Sylius,gruberro/Sylius,okwinza/Sylius,gmoigneu/platformsh-integrations,Brille24/Sylius,Pitoune/Sylius,Arminek/Sylius,videni/Sylius,SyliusBot/Sylius,Sylius/Sylius,ezecosystem/Sylius,Brille24/Sylius,torinaki/Sylius,vihuvac/Sylius,MichaelKubovic/Sylius,pamil/Sylius,foobarflies/Sylius,videni/Sylius,CoderMaggie/Sylius,pjedrzejewski/Sylius,cdaguerre/Sylius,gruberro/Sylius,Arminek/Sylius,itinance/Sylius,videni/Sylius,vihuvac/Sylius,CoderMaggie/Sylius,gmoigneu/platformsh-integrations,antonioperic/Sylius,venyii/Sylius,kayue/Sylius,cdaguerre/Sylius,ezecosystem/Sylius,dragosprotung/Sylius,lchrusciel/Sylius,gseidel/Sylius,lchrusciel/Sylius,mkilmanas/Sylius,pamil/Sylius,bitbager/Sylius,ylastapis/Sylius,cdaguerre/Sylius,SyliusBot/Sylius,ktzouno/Sylius,diimpp/Sylius,MichaelKubovic/Sylius,NeverResponse/Sylius,itinance/Sylius,ylastapis/Sylius,Mozan/Sylius,foobarflies/Sylius,ktzouno/Sylius,itinance/Sylius,CoderMaggie/Sylius,TheMadeleine/Sylius,DorianCMore/Sylius,inssein/Sylius,gorkalaucirica/Sylius,Zales0123/Sylius,okwinza/Sylius,inssein/Sylius,gabiudrescu/Sylius,GSadee/Sylius,kayue/Sylius,NeverResponse/Sylius,dragosprotung/Sylius,Zales0123/Sylius,gseidel/Sylius,ylastapis/Sylius,MichaelKubovic/Sylius,DorianCMore/Sylius,dragosprotung/Sylius,Niiko/Sylius,Arminek/Sylius,michalmarcinkowski/Sylius,gmoigneu/platformsh-integrations,bitbager/Sylius,Mozan/Sylius,Joypricecorp/Sylius,Mozan/Sylius,torinaki/Sylius,Sylius/Sylius,Joypricecorp/Sylius,gruberro/Sylius,itinance/Sylius,regnisolbap/Sylius,Niiko/Sylius,Brille24/Sylius,gruberro/Sylius,pamil/Sylius,SyliusBot/Sylius,mbabker/Sylius,torinaki/Sylius,pjedrzejewski/Sylius,okwinza/Sylius,michalmarcinkowski/Sylius,loic425/Sylius,danut007ro/Sylius,gorkalaucirica/Sylius,psren/Sylius,gabiudrescu/Sylius,mheki/Sylius,okwinza/Sylius,loic425/Sylius,antonioperic/Sylius,Zales0123/Sylius,GSadee/Sylius,venyii/Sylius,Pitoune/Sylius,mbabker/Sylius,psren/Sylius,mheki/Sylius,ylastapis/Sylius,Sylius/Sylius,bitbager/Sylius,regnisolbap/Sylius,danut007ro/Sylius,TheMadeleine/Sylius,cdaguerre/Sylius,diimpp/Sylius,cdaguerre/Sylius,inssein/Sylius,bretto36/Sylius,bitbager/Sylius,Pitoune/Sylius,Brille24/Sylius,foobarflies/Sylius,bretto36/Sylius,mbabker/Sylius,Niiko/Sylius,danut007ro/Sylius,mheki/Sylius,antonioperic/Sylius,gmoigneu/platformsh-integrations,ezecosystem/Sylius,gseidel/Sylius,101medialab/Sylius,michalmarcinkowski/Sylius,ktzouno/Sylius,gorkalaucirica/Sylius,gseidel/Sylius,mkilmanas/Sylius,loic425/Sylius,vihuvac/Sylius,mbabker/Sylius,regnisolbap/Sylius,vihuvac/Sylius,TheMadeleine/Sylius,mkilmanas/Sylius,videni/Sylius,gabiudrescu/Sylius,inssein/Sylius,NeverResponse/Sylius,lchrusciel/Sylius,michalmarcinkowski/Sylius,danut007ro/Sylius,MichaelKubovic/Sylius,Mozan/Sylius,mkilmanas/Sylius,101medialab/Sylius,torinaki/Sylius,pjedrzejewski/Sylius,DorianCMore/Sylius,okwinza/Sylius