Update dependency rollup to v1.27.11

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rollup	devDependencies	patch	1.27.10 -> 1.27.11

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Release Notes

rollup/rollup

### [`v1.27.11`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​12711) [Compare Source](https://togithub.com/rollup/rollup/compare/v1.27.10...v1.27.11) _2019-12-12_ ##### Bug Fixes - Resolve a crash due to an infinite loop ([#​3280](https://togithub.com/rollup/rollup/issues/3280)) ##### Pull Requests - [#​3280](https://togithub.com/rollup/rollup/pull/3280): Prevent infinite deoptimizations ([@​lukastaegert](https://togithub.com/lukastaegert))

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