chore: Bump version to 1.4.0

Author: eclipse-zenoh-bot

Cargo.toml

@@ -15,7 +15,7 @@
 #
 [package]
 name = "zenoh-python"
-version = "1.3.4"
+version = "1.4.0"
 authors = [
   "kydos <angelo@icorsaro.net>",
   "Julien Enoch <julien@enoch.fr>",

pyproject.toml

@@ -20,7 +20,7 @@ build-backend = "maturin"
 
 [project]
 name = "eclipse-zenoh"
-version = "1.3.4"
+version = "1.4.0"
 description = "The python API for Eclipse zenoh"
 requires-python = ">=3.8"
 authors = [