SPM is broken because Swift-FHIR branch not found

[SwiftNativeDeveloper]

@drdavec

The Package.swift file calls clinical-cloud/Swift-FHIR
https://github.com/clinical-cloud/SMART/blob/master/Package.swift#L21

Specifically, the dependency is on a branch 'swift-package'
https://github.com/clinical-cloud/Swift-FHIR/branches

Can you please update the master branch of this repository with an appropriate dependency branch within your sibling library Swift-FHIR?