Update sled requirement from 0.31 to 0.32

Updates the requirements on [sled](https://github.com/spacejam/sled) to permit the latest version.
- [Release notes](https://github.com/spacejam/sled/releases)
- [Changelog](https://github.com/spacejam/sled/blob/master/CHANGELOG.md)
- [Commits](https://github.com/spacejam/sled/compare/v0.31...v0.32)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

lib/Cargo.toml

@@ -14,7 +14,7 @@ edition = "2018"
 [dependencies]
 lazy_static = "1"
 rocksdb = { version = "0.14", optional = true }
-sled = { version = "0.31", optional = true }
+sled = { version = "0.32", optional = true }
 quick-xml = "0.18"
 rand = "0.7"
 md-5 = "0.8"