chore(deps): update dependency rollup to v2.22.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rollup (source)	devDependencies	patch	2.22.0 -> 2.22.1

---

Release Notes

rollup/rollup

### [`v2.22.1`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2221) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.22.0...v2.22.1) _2020-07-18_ ##### Bug Fixes - Remove unused arguments when calling a conditional expression ([#​3680](https://togithub.com/rollup/rollup/issues/3680)) ##### Pull Requests - [#​3680](https://togithub.com/rollup/rollup/pull/3680): Allow tree-shaking of arguments of functions that are returned by conditional expressions ([@​lukastaegert](https://togithub.com/lukastaegert))

---

Renovate configuration

:date: Schedule: At any time (no schedule defined).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.