fix(smerel): bump changelog to 8.0.0 #403

Job	Run time
discover-scenarios	2s
test (almalinux-9)	1m 45s
test (amazonlinux-2022)	1m 52s
test (archlinux)	4m 1s
test (centos-stream-9)	2m 4s
test (centos-stream-9-enterprise)	2m 0s
test (debian-11)	1m 55s
test (debian-11-enterprise)	1m 48s
test (rockylinux-9)	2m 18s
test (ubuntu-20.04)	2m 14s
test (ubuntu-22.04)	2m 3s
test (ubuntu-24.04)	1m 51s
	23m 53s

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