chore(deps) Update dependency @sveltejs/vite-plugin-svelte to v3.1.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@sveltejs/vite-plugin-svelte (source)	3.1.1 -> 3.1.2

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Release Notes

sveltejs/vite-plugin-svelte (@​sveltejs/vite-plugin-svelte)

### [`v3.1.2`](https://togithub.com/sveltejs/vite-plugin-svelte/releases/tag/%40sveltejs/vite-plugin-svelte%403.1.2) [Compare Source](https://togithub.com/sveltejs/vite-plugin-svelte/compare/@sveltejs/vite-plugin-svelte@3.1.1...@sveltejs/vite-plugin-svelte@3.1.2) ##### Patch Changes - add warning for svelte5 users to update to vite-plugin-svelte@4 ([#​964](https://togithub.com/sveltejs/vite-plugin-svelte/pull/964))

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Configuration

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