Use the default versioning class for the CurrentBanner view instead of no versioning class.
Use the default versioning class for the CurrentBanner view instead of no versioning class.

- Since the BannerSerializer uses VersionedDateTime fields to properly format the start and end dates of the banner, the request needs to contain the version.

felliott/osf.io,Johnetordoff/osf.io,aaxelb/osf.io,pattisdr/osf.io,adlius/osf.io,cslzchen/osf.io,felliott/osf.io,mattclark/osf.io,Johnetordoff/osf.io,CenterForOpenScience/osf.io,baylee-d/osf.io,CenterForOpenScience/osf.io,baylee-d/osf.io,adlius/osf.io,mfraezz/osf.io,aaxelb/osf.io,Johnetordoff/osf.io,mfraezz/osf.io,cslzchen/osf.io,mattclark/osf.io,felliott/osf.io,adlius/osf.io,brianjgeiger/osf.io,aaxelb/osf.io,cslzchen/osf.io,mfraezz/osf.io,mattclark/osf.io,saradbowman/osf.io,adlius/osf.io,CenterForOpenScience/osf.io,Johnetordoff/osf.io,brianjgeiger/osf.io,baylee-d/osf.io,pattisdr/osf.io,brianjgeiger/osf.io,CenterForOpenScience/osf.io,mfraezz/osf.io,felliott/osf.io,saradbowman/osf.io,pattisdr/osf.io,cslzchen/osf.io,brianjgeiger/osf.io,aaxelb/osf.io