chore(deps): update dependency html-proofer to v5.0.8

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
html-proofer	patch	'5.0.7' -> '5.0.8'

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Release Notes

gjtorikian/html-proofer (html-proofer)

### [`v5.0.8`](https://togithub.com/gjtorikian/html-proofer/blob/HEAD/CHANGELOG.md#v508---06-08-2023) [Compare Source](https://togithub.com/gjtorikian/html-proofer/compare/v5.0.7...v5.0.8) null

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