Run tests / chore: reduce simplejson dependencies (#2962) #2276

Job	Run time
test-macos (arm64)	20m 12s
test-windows-full (windows-11-arm)	20m 16s
test-windows-core (windows-11-arm)	20m 6s
spellcheck-docs	14s
test-linux (ubuntu-24.04-arm)	20m 14s
test-windows-full (windows-latest)	20m 16s
test-macos (x64)	20m 32s
test-pack	4m 24s
test-linux (ubuntu-latest)	20m 17s
test-windows-core (windows-latest)	20m 0s
	2h 46m 31s

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