chore(deps): update dependency @mdit-vue/shared to v0.12.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@mdit-vue/shared (source)	0.12.0 -> 0.12.1

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Release Notes

mdit-vue/mdit-vue (@​mdit-vue/shared)

### [`v0.12.1`](https://togithub.com/mdit-vue/mdit-vue/blob/HEAD/CHANGELOG.md#0121-2023-08-24) [Compare Source](https://togithub.com/mdit-vue/mdit-vue/compare/v0.12.0...v0.12.1) **Note:** Version bump only for package mdit-vue

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