chore(deps): update dependency rollup to v2.16.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rollup (source)	devDependencies	patch	2.16.0 -> 2.16.1

---

Release Notes

rollup/rollup

### [`v2.16.1`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2161) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.16.0...v2.16.1) _2020-06-13_ ##### Bug Fixes - Do not produce invalid code when an external or chunk id contain quotes or line-breaks ([#​3632](https://togithub.com/rollup/rollup/issues/3632)) - Do not fail but emit a warning when mutating a namespace object ([#​3633](https://togithub.com/rollup/rollup/issues/3633)) ##### Pull Requests - [#​3632](https://togithub.com/rollup/rollup/pull/3632): Handle single quote escaping in ids ([@​guybedford](https://togithub.com/guybedford)) - [#​3633](https://togithub.com/rollup/rollup/pull/3633): Turn namespace assignment error into a warning ([@​guybedford](https://togithub.com/guybedford))

---

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.