Update dependency qunit to v2.19.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
qunit (source)	2.19.3 -> 2.19.4

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Release Notes

qunitjs/qunit

### [`v2.19.4`](https://togithub.com/qunitjs/qunit/blob/HEAD/History.md#​2194--2023-01-23) [Compare Source](https://togithub.com/qunitjs/qunit/compare/2.19.3...2.19.4) \================== ##### Fixed - Core: Fix memory leak via `config.timeoutHandler` from last async test. (Sergey Astapov)

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