Error: 'SwiftInfo' value has no field or method 'swift_version

Hi :),

`SwiftInfo` no longer have `swift_version` since PR: https://github.com/bazelbuild/rules_swift/pull/551

```
File "/private/var/tmp/_bazel_andre.alves/0c8bf54092c40cf2f95e2873be89e4d4/external/xchammer/tulsi/tulsi_aspects.bzl", line 911, column 69, in _tulsi_sources_aspect
transitive_attributes["swift_language_version"] = swift_info.swift_version
Error: 'SwiftInfo' value has no field or method 'swift_version'
```

I tried to update Tulsi dependency to HEAD but XCHammer is not compiling due to some Swift errors. Not sure what is the plan to update Tulsi since it's a fork. Any plans to update Tulsi dependency?

Thanks.