chore(deps): update dependency rollup to v2.46.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.45.2 -> 2.46.0

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Release Notes

rollup/rollup

### [`v2.46.0`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2460) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.45.2...v2.46.0) _2021-04-29_ ##### Features - Add option to disable file name sanitation ([#​4058](https://togithub.com/rollup/rollup/issues/4058)) - Add information about importers to unused external import warning ([#​4054](https://togithub.com/rollup/rollup/issues/4054)) ##### Pull Requests - [#​4042](https://togithub.com/rollup/rollup/pull/4042): Use Github actions only ([@​lukastaegert](https://togithub.com/lukastaegert)) - [#​4045](https://togithub.com/rollup/rollup/pull/4045): Fix REPL artefact branch reference ([@​lukastaegert](https://togithub.com/lukastaegert)) - [#​4046](https://togithub.com/rollup/rollup/pull/4046): Use codecov action for coverage ([@​lukastaegert](https://togithub.com/lukastaegert)) - [#​4054](https://togithub.com/rollup/rollup/pull/4054): Add to `UNUSED_EXTERNAL_IMPORT` warning information about the origin of the problem ([@​cawa-93](https://togithub.com/cawa-93)) - [#​4058](https://togithub.com/rollup/rollup/pull/4058): Add sanitizeFileName option ([@​guybedford](https://togithub.com/guybedford))

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