Bump rkyv from 0.7.44 to 0.8.5 #5708

Job	Run time
Check	35s
test (beta)	1m 34s
test (stable)	1m 33s
test (windows)	3m 42s
test (macos)	1m 22s
test_all_features	13m 42s
coverage	7m 59s
Run tests under wasm32-wasi	1m 18s
Lints (beta)	36s
Check if wasm-pack builds a valid package for the sourmash crate	1m 22s
Lints (stable)	35s
minimum_rust_version	39s
Publish (dry-run)	5m 55s
Check if cbindgen runs cleanly for generating the C headers	8m 24s
	49m 16s

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