Keep Hugging Face PURL version component case as-is

[maitre-matt]

Update test data so version component is not lower-cased

[williamboman]

I believe this will cause implementations that respect the following rule in the PURL-TYPES spec to fail:

The version is the model revision Git commit hash. It is case insensitive and must be lowercased in the package URL.

edit: Or hm I might've spoke too soon, the above probably only applies to the canonical_url? The version component itself is parsed as-is?

[maitre-matt]

I am not sure: I am not clear whether the version JSON field is about the canonical URL or the original URL. The test could go either way.

[williamboman]

FWIW this breaks the test case in an implementation I wrote. I'm not implying that my implementation is correct (it's merely my interpretation of this particular part of the spec). Thought I'd share!