fix(deps): update dependency node-html-to-image to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
node-html-to-image	^5.0.0 → ^6.2.0

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Release Notes

frinyvonnick/node-html-to-image (node-html-to-image)

v6.2.0

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Added

• ✅ Add a real-browser test for beforeRendering + maxConcurrency [597f191]
• ✨ Expose maxConcurrency option (#​80) [9a6ed13]
• ✨ Add a beforeRendering hook (#​211, #​210) [4cf5973]

Fixed

• 🐛 Expose handlebarsHelpers on the Options type (#​228) [d8542a0]

v6.1.0

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Changed

• ⬆️ Update CodeQL action to v3 (#​196) [c5e4ac1]

Fixed

• 🐛 Don't kill the host process and return base64 as a string [b468cff]
• 💚 Fix CI browser launch on Ubuntu runners [4a77e8f]

Miscellaneous

• 🔨 Harden the release script [2267c8e]

v6.0.0

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Changed

• 🚨 Replace ESLint config with flat config [78c5d48]
• ♻️ Migrate test runner from Jest to Vitest [984dd57]
• ⬆️ Upgrade dependencies and bump to v6.0.0 [e4879f1]

Miscellaneous

• 🔨 Add one-command release script [fd81a36]
• 📝 Add v5 -> v6 migration guide [8012675]
• 🏷️ Enable strict TypeScript and adapt to the puppeteer 25 API [888b0b7]

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