Update dependency rollup to v3.21.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	3.21.1 -> 3.21.2

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Release Notes

rollup/rollup

### [`v3.21.2`](https://togithub.com/rollup/rollup/blob/HEAD/CHANGELOG.md#​3212) [Compare Source](https://togithub.com/rollup/rollup/compare/v3.21.1...v3.21.2) *2023-04-30* ##### Bug Fixes - Mark global functions that trigger iterators as impure for now ([#​4955](https://togithub.com/rollup/rollup/issues/4955)) ##### Pull Requests - [#​4955](https://togithub.com/rollup/rollup/pull/4955): fix: mark some known globals or their functions as impure ([@​TrickyPi](https://togithub.com/TrickyPi))

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