test: unify assertSnapshot stacktrace transform #3256

Job	Run time
Build slim tarball	2m 25s
x86_64-darwin: with shared libraries	50m 51s
aarch64-darwin: with shared libraries	45m 23s
x86_64-linux: with shared libraries	42m 54s
aarch64-linux: with shared libraries	37m 0s
	2h 58m 33s

Provide feedback