Prepare for v0.9.0 (#162)

Signed-off-by: Anuraag Agrawal <anuraaga@gmail.com>

Author: anuraaga

protoc-gen-connect-python/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "protoc-gen-connect-python"
-version = "0.8.1"
+version = "0.9.0"
 description = "Code generator for connect-python"
 maintainers = [
     { name = "Anuraag Agrawal", email = "anuraaga@gmail.com" },

protoc-gen-connect-python/uv.lock

@@ -1,6 +1,6 @@
 [project]
 name = "connect-python"
-version = "0.8.1"
+version = "0.9.0"
 description = "Server and client runtime library for Connect RPC"
 maintainers = [
     { name = "Anuraag Agrawal", email = "anuraaga@gmail.com" },