update codec to 0.8.0

Signed-off-by: Gabriele Santomaggio <G.santomaggio@gmail.com>

Author: Gsantomaggio

protocol/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rabbitmq-stream-protocol"
-version = "0.7.0"
+version = "0.8.0"
 authors = ["wolf4ood <enrico.risa@gmail.com>", "korsmakolnikov <korsmakolnikov@gmail.com>"]
 edition = "2018"
 license = "Apache-2.0 OR MPL-2.0"