Update dependency rollup to v3.20.7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	3.20.6 -> 3.20.7

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Release Notes

rollup/rollup

v3.20.7

Compare Source

2023-04-21

Bug Fixes

• Properly track array element mutations when iterating with a for-of loop (#​4949)
• Handle default exporting an anonymous class that extends another class (#​4950)

Pull Requests

• #​4943: Add a test for reserved keywords used as import/export specifiers (@​Andarist)
• #​4949: Deoptimize right side in for-of loops (@​lukastaegert)
• #​4950: Support default exported classes that extend other classes (@​lukastaegert)

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