Bump log from 0.4.7 to 0.4.8 (#5382)

Bumps [log](https://github.com/rust-lang/log) from 0.4.7 to 0.4.8.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang-nursery/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/commits)

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

client/Cargo.toml

@@ -12,7 +12,7 @@ edition = "2018"
 bincode = "1.1.4"
 bs58 = "0.2.0"
 jsonrpc-core = "13.0.0"
-log = "0.4.7"
+log = "0.4.8"
 rand = "0.6.5"
 rayon = "1.1.0"
 reqwest = "0.9.19"