Fix failing tests

[JKRhb]

This PR will investigate and hopefully eventually solve the issues we currently observe when it comes to testing the library.

[coveralls]

Pull Request Test Coverage Report for Build 9710474884

Details

• 22 of 24 (91.67%) changed or added relevant lines in 2 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 91.636%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
lib/server.ts	17	19	89.47%

Files with Coverage Reduction	New Missed Lines	%
lib/server.ts	2	86.22%

Totals
Change from base Build 9363797542:	-0.1%
Covered Lines:	2893
Relevant Lines:	3111

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💛 - Coveralls

[JKRhb]

Apparently, it's only two tests that are broken under Node 20. I will look into how to solve the problem here.

[Apollon77]

overlaps replaces #362 ?

[JKRhb]

overlaps replaces #362 ?

Hmm, good point! Maybe updating will actually solve the issue here – I will test it out :)

[JKRhb]

I think this PR is now ready for review :) The tests are passing now again (I also added Node 22 to the test matrix) – however, I needed to skip a few of them since there seem to be some changes in Node 20 and above that cause issues with sinon.

In general, the tests are somewhat flaky at the moment, but I think we can probably deal with that in future PRs. For now, it is probably more important to be able to move forward again (and maybe also release a new version).