Update dependency yjs to v13.6.18

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
yjs (source)	13.6.17 -> 13.6.18

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Release Notes

yjs/yjs (yjs)

### [`v13.6.18`](https://togithub.com/yjs/yjs/releases/tag/v13.6.18) [Compare Source](https://togithub.com/yjs/yjs/compare/v13.6.17...v13.6.18) - fix [#​645](https://togithub.com/yjs/yjs/issues/645) [yjs/y-utility#8](https://togithub.com/yjs/y-utility/issues/8) [`2e5abad`](https://togithub.com/yjs/yjs/commit/2e5abad7) - add lexical editor [`3f1746f`](https://togithub.com/yjs/yjs/commit/3f1746f3)

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Configuration

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