message: undo changes to toml file.
diff: @@ -20,10 +20,7 @@ displaydoc = { version = "0.1", default-features = false, optional = true }
  ed25519-dalek = { version = "1.0.0", default-features = false, features = ["rand", "u64_backend"] }
  hex = { version = "0.4.2", default-features = false }
  hex_fmt = "0.3.0"
  -k256 = { version = "0.7.2", default-features = false, features = [
  - "ecdsa",
  - "zeroize",
  -] }
  +k256 = { version = "0.7.2", default-features = false, features = ["ecdsa", "zeroize"] }
  num = { version = "0.4.0", default-features = false }
  num-derive = { version = "0.3.0", default-features = false }
  num-integer = { version = "0.1.42", default-features = false }
  