build(deps): bump toml from 0.5.6 to 0.5.7

Bumps [toml](https://github.com/alexcrichton/toml-rs) from 0.5.6 to 0.5.7.
- [Release notes](https://github.com/alexcrichton/toml-rs/releases)
- [Commits](https://github.com/alexcrichton/toml-rs/compare/0.5.6...0.5.7)

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

Cargo.lock

@@ -1351,9 +1351,9 @@ checksum = "53953d2d3a5ad81d9f844a32f14ebb121f50b650cd59d0ee2a07cf13c617efed"
 
 [[package]]
 name = "toml"
-version = "0.5.6"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffc92d160b1eef40665be3a05630d003936a3bc7da7421277846c2613e92c71a"
+checksum = "75cf45bb0bef80604d001caaec0d09da99611b3c0fd39d3080468875cdb65645"
 dependencies = [
  "indexmap",
  "serde",

Cargo.toml

@@ -32,7 +32,7 @@ clap = "2.33.3"
 ansi_term = "0.12.1"
 dirs-next = "1.0.1"
 git2 = { version = "0.13.11", default-features = false }
-toml = { version = "0.5.6", features = ["preserve_order"] }
+toml = { version = "0.5.7", features = ["preserve_order"] }
 rust-ini = "0.16" 
 serde_json = "1.0.58"
 rayon = "1.4.1"