fix(deps): update dependency preact-render-to-string to v5.1.18

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
preact-render-to-string	5.1.17 -> 5.1.18

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Release Notes

developit/preact-render-to-string

### [`v5.1.18`](https://togithub.com/developit/preact-render-to-string/releases/5.1.18) [Compare Source](https://togithub.com/developit/preact-render-to-string/compare/v5.1.17...5.1.18) - Prevent possible memory leak in 5.1.17.

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