Update toml requirement from 0.4.2 to 0.5.0

Updates the requirements on [toml](https://github.com/alexcrichton/toml-rs) to permit the latest version.
- [Release notes](https://github.com/alexcrichton/toml-rs/releases)
- [Commits](toml-rs/toml-rs@0.4.2...0.5.0)

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

Cargo.toml

@@ -56,7 +56,7 @@ shell-escape = "0.1.4"
 tar = { version = "0.4.18", default-features = false }
 tempfile = "3.0"
 termcolor = "1.0"
-toml = "0.4.2"
+toml = "0.5.0"
 url = "1.1"
 url_serde = "0.2.0"
 walkdir = "2.2"