UUID is case sensitive

[typerat]

Hi,
I noticed that the UUID validation fails if the UUID is not lower-case.

From https://tools.ietf.org/html/rfc4122#section-3

The hexadecimal values "a" through "f" are output as lower case characters and are case insensitive on input.

I think the schema validation should treat all data as input, so case insensitive.

This regex (with (?i)) should fix the problem:

^(?i)[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$