chore(deps): update dependency rollup to v2.42.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.42.0 -> 2.42.1

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Release Notes

rollup/rollup

### [`v2.42.1`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2421) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.42.0...v2.42.1) _2021-03-20_ ##### Bug Fixes - Do not produce unhandled Promise rejections when plugins throw while using the `perf` option ([#​4004](https://togithub.com/rollup/rollup/issues/4004)) ##### Pull Requests - [#​4004](https://togithub.com/rollup/rollup/pull/4004): Fixed unhandled promise rejections ([@​gluck](https://togithub.com/gluck))

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