🤖 Fix invalid UUIDs - Githubissues

This PR regenerates each UUID on the track that was invalid.

To be valid, each value of a uuid key must:

Be a well-formed version 4 UUID (compliant with RFC 4122) in the canonical textual representation [1]
Not exist elsewhere on the track
Not exist elsewhere on Exercism

A track can generate a suitable UUID by running configlet uuid.

In the future, configlet lint will produce an error for an invalid UUID.

[1] That is, it must match this regular expression:

^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$

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