Update dependency rollup to v2.33.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.33.2 -> 2.33.3

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Release Notes

rollup/rollup

### [`v2.33.3`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2333) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.33.2...v2.33.3) _2020-11-18_ ##### Bug Fixes - Do not use `.js` extension when importing AMD files from a UMD bundle ([#​3872](https://togithub.com/rollup/rollup/issues/3872)) ##### Pull Requests - [#​3861](https://togithub.com/rollup/rollup/pull/3861): Update chat/support links ([@​shellscape](https://togithub.com/shellscape)) - [#​3872](https://togithub.com/rollup/rollup/pull/3872): Also removeExtensionFromRelativeAmdId in UMD finaliser ([@​tjenkinson](https://togithub.com/tjenkinson))

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