build: update rollup to version 2.38.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.38.0 -> 2.38.1

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Release Notes

rollup/rollup

v2.38.1

Compare Source

2021-01-28

Bug Fixes

• Fix internal error when resolving a missing entry point in the browser build (#​3935)

Pull Requests

• #​3935: fix: remove isolated resolve() for compat with browser distribution (@​cmorten and @​lukastaegert)
• #​3936: Ensure test after() callback is always executed (@​Benjamin-Dobell)
• #​3937: Modernize references to other software (@​ludofischer)

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