Replace sled crate?

[jqnatividad]

It seems sled 0.34 is functionally unmaintained as sled's maintainer works upstream on a major v1 release

spacejam/sled#1514

Could sled be replaced with a more actively maintained crate?

[jqnatividad]

And now, fxhash - which is a sled dependency - has an unmaintained advisory...

rustsec/advisory-db#2185

Given that the sled maintainer has been unresponsive to 0.34 issues, I'm thinking of creating a PR to replace sled with redb or rocksdb...

https://github.com/cberner/redb
https://github.com/rust-rocksdb/rust-rocksdb
https://github.com/facebook/rocksdb/

@jaemk , WDYT?