Update codex to 0.142.3 (#249)

* Update codex to 0.142.3

* Fix types and tests after Codex update

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: acp-release-bot[bot]

package-lock.json

@@ -62,7 +62,7 @@
   },
   "dependencies": {
     "@agentclientprotocol/sdk": "^1.0.0",
-    "@openai/codex": "^0.142.2",
+    "@openai/codex": "^0.142.3",
     "diff": "^8.0.3",
     "open": "^11.0.0",
     "vscode-jsonrpc": "^8.2.1",