Rust

Add `DbSnapshot` to `sov-db-schema` #4019

Job	Run time
check_no_std	25s
check	2m 36s
check-licenses	32s
coverage	5m 29s
nextest	4m 56s
test	2m 59s
cargo-doc-artifact	1m 58s
check-demo-rollup-table-of-contents	10s
validate-packages-to-publish-yml	30s
deploy-github-pages	0s
features	21m 13s
check-demo-rollup-bash-commands	5m 52s
check-aggregate	3s
	46m 43s

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