Rename swift-syntax dependency path

[alphatroya]

During the SPM resolution phase, XCode highlights a warning.

'codablewrappers' dependency on 'https://github.com/apple/swift-syntax.git' conflicts with dependency on 'https://github.com/swiftlang/swift-syntax.git' which has the same identity 'swift-syntax'. this will be escalated to an error in future versions of SwiftPM.

I think you should rename the dependency path accordingly since Apple moves the repo.