Bump log from 0.4.6 to 0.4.7 (#5144)

Bumps [log](https://github.com/rust-lang/log) from 0.4.6 to 0.4.7.
- [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/compare/0.4.6...0.4.7)

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

netutil/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 [dependencies]
 bincode = "1.1.4"
 clap = "2.33.0"
-log = "0.4.2"
+log = "0.4.7"
 nix = "0.14.1"
 rand = "0.6.1"
 socket2 = "0.3.9"