chore(deps): update dependency rollup to v2.38.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.38.1 -> 2.38.2

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Release Notes

rollup/rollup

### [`v2.38.2`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2382) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.38.1...v2.38.2) _2021-01-31_ ##### Bug Fixes - Do not generate invalid code for partially tree-shaken declarations in for loops ([#​3943](https://togithub.com/rollup/rollup/issues/3943)) - Always include function bodies of functions in side-effect-free modules ([#​3944](https://togithub.com/rollup/rollup/issues/3944)) ##### Pull Requests - [#​3943](https://togithub.com/rollup/rollup/pull/3943): Do not partially tree-shake unused declarations in for loops ([@​lukastaegert](https://togithub.com/lukastaegert)) - [#​3944](https://togithub.com/rollup/rollup/pull/3944): Correctly include functions with side effects from side-effect-free modules ([@​lukastaegert](https://togithub.com/lukastaegert))

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