Shorter availability data retention period for testnets #19818

Job	Run time
check-dependency-rules	8s
check-fail-ci	12s
check-markdown	19s
check-readme	3m 4s
check-workspace	24s
preflight / preflight	40s
preflight / ci-versions	56s
check-rust-feature-propagation	2m 3s
check-toml-format	1m 1s
fmt	1m 11s
check-umbrella	2m 11s
test-rust-features	2m 7s
All quick checks passed	1s
	14m 17s

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