Give alpha banner new markup pattern
Give alpha banner new markup pattern

Styles for new pattern were added here:

https://github.com/alphagov/govuk_frontend_toolkit/commit/5bedef8ea363830b2c0665c01c9ce783e563ee22

paulpod/driving,nmiddleweek/beta-gov-prototype,paulpod/dmsp,tjharrop/visa-fees,timpaul/govuk_patterns,paulpod/bulk,tjharrop/electronic-visa-waiver,dudelmeister/full-prototype-kit,paulpod/dvladesign,adampotter/resource,timpaul/govuk_patterns,rivalee/gds-pub-prototype,annapowellsmith/popup-prototypes,dudelmeister/ved,dwpdigitaltech/ejs-prototype,ballzy/pip-alpha,timpaul/vehicle_management_prototype,timpaul/vehicle_management_prototype,paulpod/fin,paulpod/evl,paulpod/prototypes,rhianonymous/firstreg,tjharrop/electronic-visa-waiver,paulpod/fin,paulpod/wedding,paulpod/vm,paulpod/fin,paulpod/vm.old,paulpod/firstreg,MylesStevens/CHANGE_OF_ADDRESS,amosie/amys-prototypes,paulpod/vm,dudelmeister/full-prototype-kit,paulpod/fin,dwpdigitaltech/ejs-prototype,paulpod/dvladesign,MylesStevens/express_prototype_coa_ext,MylesStevens/CHANGE_OF_ADDRESS,rhianonymous/firstreg,adampotter/resource,paulpod/evl,paulpod/protopod,MylesStevens/express_prototype_coa_ext,MylesStevens/CHANGE_OF_ADDRESS,gup-dwp/pip-prototype,paulpod/vm.old,MylesStevens/express_prototype_coa_ext,dwpdigitaltech/ejs-prototype,rivalee/gds-highway-code,paulpod/driving,paulpod/drivingservices,paulpod/dmsp,adampotter/resource,ballzy/pip-alpha,paulpod/firstreg,paulpod/bulk,rivalee/gds-highway-code,tjharrop/electronic-visa-waiver,dudelmeister/ved,paulpod/wedding,tjharrop/visa-fees,gup-dwp/pip-prototype,paulpod/drivingservices,paulpod/prototypes,paulpod/protopod