Fix publish CI. (#324)

Added extra-traits feature to syn dependency so we will get the Debug trait implementation.

Author: Meir Shpilraien (Spielrein)

redismodule-rs-macros-internals/Cargo.toml

@@ -12,7 +12,7 @@ categories = ["database", "api-bindings"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-syn = { version="1", features = ["full"]}
+syn = { version="1", features = ["full", "extra-traits"]}
 quote = "1"
 lazy_static = "1"
 proc-macro2 = "1"