Bump open-codex to 0.129.9

Prepare a new npm release version because 0.129.8 is already published. This updates the Rust workspace version, Cargo.lock package versions, and the @leonw24/open-codex package metadata.

Author: LEON-gittech

codex-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@leonw24/open-codex",
-  "version": "0.129.8",
+  "version": "0.129.9",
   "license": "Apache-2.0",
   "bin": {
     "open-codex": "bin/codex.js"