fix(smerel): bump changelog to 8.0.0 #400

Job	Run time
discover-scenarios	5s
test (almalinux-9)	1m 46s
test (amazonlinux-2022)	1m 41s
test (archlinux)	4m 3s
test (centos-stream-9)	1m 53s
test (centos-stream-9-enterprise)	1m 54s
test (debian-11)	1m 50s
test (debian-11-enterprise)	1m 53s
test (rockylinux-9)	1m 56s
test (ubuntu-20.04)	1m 52s
test (ubuntu-22.04)	2m 9s
test (ubuntu-24.04)	1m 53s
	22m 55s

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