boards: qemu: cortex_m0: Enable stack canaries in ztest #152266

Job	Run time
twister-build-prep / prep_pr	2m 46s
twister-build-prep / prep_push	0s
twister-build (1)	46m 7s
Publish Unit Tests Results	10s
Check Twister Status / all jobs passed	1s
	49m 4s

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