chore(deps): update dependency wxt to v0.18.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
wxt (source)	0.18.3 -> 0.18.4

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Release Notes

wxt-dev/wxt (wxt)

### [`v0.18.4`](https://togithub.com/wxt-dev/wxt/releases/tag/v0.18.4) [Compare Source](https://togithub.com/wxt-dev/wxt/compare/v0.18.3...v0.18.4) [compare changes](https://togithub.com/wxt-dev/wxt/compare/v0.18.3...v0.18.4) ##### 🩹 Fixes - Allow zipping hidden files in sources by listing them explicitly in `includeSources` ([#​674](https://togithub.com/wxt-dev/wxt/pull/674)) - Properly invalidate content script context ([#​683](https://togithub.com/wxt-dev/wxt/pull/683)) ##### 📖 Documentation - Update contributing guidelines ([8125d74](https://togithub.com/wxt-dev/wxt/commit/8125d74)) ##### ❤️ Contributors - Hujiulong ([@​hujiulong](http://github.com/hujiulong))

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