chore(deps): update dependency rollup to v2.50.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.50.0 -> 2.50.1

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Release Notes

rollup/rollup

v2.50.1

Compare Source

2021-05-26

Bug Fixes

• Do not associate pure annotations in simplified expressions with wrong elements (#​4095)
• Prevent invalid code when simplified conditionals start with an IIFE function expression (#​4099)

Pull Requests

• #​4095: Correctly associate pure annotations and remove invalid ones (@​lukastaegert)
• #​4099: Wrap leading function expression iifes in conditionals (@​lukastaegert)

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