fix(deps): update rust crate validator to 0.16.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
validator	dependencies	minor	0.15.0 -> 0.16.0

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Release Notes

Keats/validator

### [`v0.16.0`](https://togithub.com/Keats/validator/blob/HEAD/CHANGELOG.md#​0160-20220627) - Allow passing code/message to `required` - Add `does_not_contain` validator - Check email length before validating it

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[codecov[bot]]

Codecov Report

Merging #13 (bfc12ef) into main (42297ba) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #13   +/-   ##
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  Coverage   86.66%   86.66%           
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  Files           4        4           
  Lines         165      165           
=======================================
  Hits          143      143           
  Misses         22       22           

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