Update dependency rollup to v2.52.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.52.1 -> 2.52.2

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Release Notes

rollup/rollup

### [`v2.52.2`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2522) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.52.1...v2.52.2) *2021-06-21* ##### Bug Fixes - Support falsy plugins in types ([#​4144](https://togithub.com/rollup/rollup/issues/4144)) - Do not require return value in renderChunkHook type ([#​4144](https://togithub.com/rollup/rollup/issues/4144)) ##### Pull Requests - [#​4144](https://togithub.com/rollup/rollup/pull/4144): Use TypeScript config and improve some types ([@​lukastaegert](https://togithub.com/lukastaegert))

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