message: Update toml to 0.5
diff: @@ -15,7 +15,7 @@ log = {version = "0.4.0", default-features = false}
  bindgen = {version = "0.59", default-features = false, features= ["runtime"]}
  serde = "1.0"
  serde_derive = "1.0"
  -toml = "0.4"
  +toml = "0.5"
  mozbuild = {version = "0.1", optional = true}
  [dev-dependencies]
  