[llvm] [DebugInfo] Update CodeView enums (PR #71038)

[Saleem Abdulrasool via llvm-commits]

https://github.com/compnerd approved this pull request.

This seems reasonable to me. I think that using the updated enumerator for Swift is the proper thing to do. DO you know if they cover all three of the swift calling conventions in the PDB enumeration?

https://github.com/llvm/llvm-project/pull/71038