Bump cargo_toml from 0.12.4 to 0.13.0 (#671)

Bumps [cargo_toml](https://gitlab.com/crates.rs/cargo_toml) from 0.12.4 to 0.13.0.
- [Release notes](https://gitlab.com/crates.rs/cargo_toml/tags)
- [Commits](https://gitlab.com/crates.rs/cargo_toml/commits/master)

---
updated-dependencies:
- dependency-name: cargo_toml
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -5,5 +5,5 @@ edition = "2018"
 
 [dependencies]
 rustop = "1.1"
-cargo_toml = "0.12"
+cargo_toml = "0.13"
 anyhow = "1.0"