Fixed CVE-2021-3538 related to the non-default uuid4 request_id_format option

[malud]

Related to a security scan we will switch the underlying package from github.com/satori/go.uuid (satori/go.uuid#73) to github.com/google/uuid.

Our default format is https://github.com/rs/xid, which maps to the common option. The user have explicitly enable uuid4 in the request_id_format attribute within the settings block.

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Reviewer checklist

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• Pulled branch, manually tested
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