Bump log from 0.4.19 to 0.4.20

Bumps [log](https://github.com/rust-lang/log) from 0.4.19 to 0.4.20.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](rust-lang/log@0.4.19...0.4.20)

---
updated-dependencies:
- dependency-name: log
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.toml

@@ -34,7 +34,7 @@ futures = "0.3.28"
 futures-util = "0.3.27"
 hex = "0.4.3"
 itertools = "0.10.5"
-log = "0.4.19"
+log = "0.4.20"
 parity-db = "0.4.10"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", git = "https://github.com/paritytech/substrate", branch = "master" }
 rand = "0.8.5"