Ignite SDK 1.21.0 - Release Candidate

1.21.0-rc prerelease

• TicketmasterFoundation: 1.6.8 (build 574)
• TicketmasterAuthentication: 3.17.14 (build 106)
• TicketmasterDiscoveryAPI: 4.1.2 (build 19)
• TicketmasterPrePurchase: 4.1.2 (build 19)
• TicketmasterPurchase: 4.1.2 (build 19)
• TicketmasterSwiftProtobuf: 1.29.2
• TicketmasterSecureEntry: 1.13.0 (build 9681)
• TicketmasterTickets: 3.18.0 (build 9681)