chore: 添加 test-users.yaml 到 .gitignore

避免意外提交包含敏感信息的测试配置文件。

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: [email protected]

.gitignore

@@ -37,3 +37,4 @@ Thumbs.db
 my-users.yaml
 dev-users.yaml
 ci-users.yaml
+test-users.yaml