fix(deps): update dependency org.webjars.npm:whatwg-fetch to v3.6.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.webjars.npm:whatwg-fetch (source)	3.6.2 -> 3.6.20

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Release Notes

JakeChampion/fetch (org.webjars.npm:whatwg-fetch)

v3.6.20

Bug Fixes

• Response.error().ok === false (#​1412) (27e1c75)

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