Update dependency htmlhint to ^0.16.0

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
htmlhint (source)	^0.15.2 -> ^0.16.0

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Release Notes

htmlhint/HTMLHint

v0.16.0

Compare Source

Features

• rules: add empty-tag-not-self-closed rule (#​696) (ec171ac), closes #​311

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