Update dependency rollup to v2.7.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rollup (source)	devDependencies	patch	2.7.1 -> 2.7.2

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Release Notes

rollup/rollup

### [`v2.7.2`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​272) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.7.1...v2.7.2) _2020-04-22_ ##### Bug Fixes - Prevent an infinite loop when creating separate manual chunks with circular dependencies ([#​3510](https://togithub.com/rollup/rollup/issues/3510)) - Do not fail if "super" is used in the definition of a class field ([#​3511](https://togithub.com/rollup/rollup/issues/3511)) - Throw if a plugin tries to emit a file with an absolute Windows path ([#​3509](https://togithub.com/rollup/rollup/issues/3509)) ##### Pull Requests - [#​3509](https://togithub.com/rollup/rollup/pull/3509): Ban emitFile via absolute paths on Windows OS ([@​SASUKE40](https://togithub.com/SASUKE40)) - [#​3510](https://togithub.com/rollup/rollup/pull/3510): Do not fail for circular imports between manual chunks ([@​lukastaegert](https://togithub.com/lukastaegert)) - [#​3511](https://togithub.com/rollup/rollup/pull/3511): Support "super" in class fields ([@​lukastaegert](https://togithub.com/lukastaegert))

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