chore(deps): update dependency qunit to v2.19.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
qunit (source)	2.19.1 -> 2.19.4

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Release Notes

qunitjs/qunit

v2.19.4

Compare Source

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Fixed

• Core: Fix memory leak via config.timeoutHandler from last async test. (Sergey Astapov)

v2.19.3

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Fixed

• Assert: Restore how deepEqual treats imposter objects. (Timo Tijhof) #​1706

v2.19.2

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Changed

• Core: Faster diffing for config.noglobals by refactoring slow mutations. (Izel Nakri) #​1697
• Assert: Improve performance of QUnit.equiv(). (Izel Nakri) #​1700
• Assert: Faster deepEqual for Map values by avoiding typeEquiv calls. (Timo Tijhof)
• Assert: Faster deepEqual by reducing internal objectType checks. (Timo Tijhof)
• Assert: Faster deepEqual by using re-assignment for internal pairs. (Timo Tijhof)

Fixed

• Core: Fix inaccurate count in reporter output after re-run. #​1687
• CLI: Fix MaxListeners warning in long-running watch mode. #​1692

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[coveralls]

Pull Request Test Coverage Report for Build 3984433241

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.617%

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Totals
Change from base Build 3732611475:	0.0%
Covered Lines:	199
Relevant Lines:	206

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💛 - Coveralls