[Tests] Changed WIN32 macro to _WIN32 #118

Job	Run time
build-ubuntu (shared, ubuntu-22.04)	59s
build-ubuntu (static, ubuntu-24.04)	1m 11s
build-ubuntu (shared, ubuntu-24.04)	1m 12s
build-ubuntu (static, ubuntu-22.04)	1m 11s
build-ubuntu (static, ubuntu-22.04-arm)	1m 7s
build-ubuntu (object, ubuntu-24.04-arm)	1m 1s
build-ubuntu (object, ubuntu-24.04)	1m 0s
build-ubuntu (shared, ubuntu-22.04-arm)	1m 15s
build-ubuntu (static, ubuntu-24.04-arm)	1m 14s
build-ubuntu (object, ubuntu-22.04-arm)	1m 2s
build-ubuntu (object, ubuntu-22.04)	54s
build-ubuntu (shared, ubuntu-24.04-arm)	1m 16s
	13m 22s

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