Update dependency rollup to v4.21.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	4.21.1 -> 4.21.2

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Release Notes

rollup/rollup (rollup)

### [`v4.21.2`](https://redirect.github.com/rollup/rollup/blob/HEAD/CHANGELOG.md#4212) [Compare Source](https://redirect.github.com/rollup/rollup/compare/v4.21.1...v4.21.2) *2024-08-30* ##### Bug Fixes - Handle IIFE/UMD namespace definitions conflicting with a builtin property ([#​5605](https://redirect.github.com/rollup/rollup/issues/5605)) ##### Pull Requests - [#​5605](https://redirect.github.com/rollup/rollup/pull/5605): fix: Wrong namespace property definition ([@​thirumurugan-git](https://redirect.github.com/thirumurugan-git), [@​lukastaegert](https://redirect.github.com/lukastaegert)) - [#​5630](https://redirect.github.com/rollup/rollup/pull/5630): chore(deps): lock file maintenance minor/patch updates ([@​renovate](https://redirect.github.com/renovate)\[bot]) - [#​5631](https://redirect.github.com/rollup/rollup/pull/5631): chore(deps): lock file maintenance ([@​renovate](https://redirect.github.com/renovate)\[bot]) - [#​5632](https://redirect.github.com/rollup/rollup/pull/5632): chore(deps): lock file maintenance ([@​renovate](https://redirect.github.com/renovate)\[bot])

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