message: fix casper-node-macros build error
diff: @@ -15,7 +15,7 @@ indexmap = "1.6.0"
  Inflector = "0.11.4"
  proc-macro2 = "1.0.21"
  quote = "1.0.8"
  -syn = { version = "1.0.40", features = ["full"] }
  +syn = { version = "1.0.40", features = ["full", "extra-traits"] }
  [lib]
  proc-macro = true
  