chore(deps): update dependency rollup to v2.50.5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.50.4 -> 2.50.5

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Release Notes

rollup/rollup

### [`v2.50.5`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2505) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.50.4...v2.50.5) *2021-05-30* ##### Bug Fixes - Detect side effects when accessing thenables ([#​4115](https://togithub.com/rollup/rollup/issues/4115)) ##### Pull Requests - [#​4114](https://togithub.com/rollup/rollup/pull/4114): use `colorette` instead of `turbocolor` ([@​ryuever](https://togithub.com/ryuever)) - [#​4115](https://togithub.com/rollup/rollup/pull/4115): Tracks side effects of thenables ([@​lukastaegert](https://togithub.com/lukastaegert))

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