rust: prepare the 2.4.0 version deployment

Signed-off-by: Frédéric Gardes <[email protected]>

Author: tigroo

rust/Cargo.toml

@@ -9,7 +9,7 @@
 
 [package]
 name = "libits-client"
-version = "2.3.0"
+version = "2.4.0"
 authors = ["Frédéric Gardes <[email protected]>", "Nicolas Buffon <[email protected]>"]
 license = "MIT"
 description = "library to connect on an ITS MQTT server"