fix(ci): miscellaneous improvements to CI and tests (#310) #989

Job	Run time
build-splicer (24.10.0, stable, windows-latest)	4m 37s
build-splicer (24.10.0, stable, ubuntu-latest)	2m 11s
build-splicer (24.10.0, stable, macos-latest)	2m 4s
lint	48s
build (24.10.0, stable, ubuntu-latest, release)	12s
build (24.10.0, stable, ubuntu-latest, debug)	13s
test-example (24.10.0, ubuntu-latest)	33s
test (latest, windows-latest, debug)	10m 11s
test (24.10.0, windows-latest, release)	10m 42s
test (24.10.0, macos-latest, debug)	8m 38s
test (24.10.0, ubuntu-latest, debug)	9m 28s
test (24.10.0, macos-latest, release)	7m 55s
test (latest, macos-latest, release)	6m 27s
test (24.10.0, windows-latest, debug)	10m 44s
test (24.10.0, ubuntu-latest, release)	8m 49s
test (latest, macos-latest, debug)	8m 25s
test (latest, ubuntu-latest, debug)	9m 25s
test (latest, ubuntu-latest, release)	8m 40s
test (latest, windows-latest, release)	9m 59s
	2h 0m 1s

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