chore(deps): update vue monorepo to ^3.4.21

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@vue/compiler-sfc (source)	^3.4.20 -> ^3.4.21
vue (source)	^3.4.20 -> ^3.4.21

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Release Notes

vuejs/core (@​vue/compiler-sfc)

### [`v3.4.21`](https://togithub.com/vuejs/core/blob/HEAD/CHANGELOG.md#3421-2024-02-28) [Compare Source](https://togithub.com/vuejs/core/compare/v3.4.20...v3.4.21) ##### Bug Fixes - **runtime-dom:** avoid unset option's value ([#​10416](https://togithub.com/vuejs/core/issues/10416)) ([b3f8b5a](https://togithub.com/vuejs/core/commit/b3f8b5a4e700d4c47a146b6040882287d180f6cb)), closes [#​10412](https://togithub.com/vuejs/core/issues/10412) [#​10396](https://togithub.com/vuejs/core/issues/10396) - **suspense:** ensure nested suspense patching if in fallback state ([#​10417](https://togithub.com/vuejs/core/issues/10417)) ([7c97778](https://togithub.com/vuejs/core/commit/7c97778aec1e3513035e5df265e1b8a7801f6106)), closes [#​10415](https://togithub.com/vuejs/core/issues/10415) - **warning:** stringify args in warn handler ([#​10414](https://togithub.com/vuejs/core/issues/10414)) ([bc37258](https://togithub.com/vuejs/core/commit/bc37258caa2f6f67f4554ab8587aca3798d92124)), closes [#​10409](https://togithub.com/vuejs/core/issues/10409)

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