chore(deps): update postgres docker tag to v16.5

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres	minor	16.4-alpine -> 16.5-alpine

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[fit2cloudrd]

这段代码看起来没有明显的问题，但是有几个地方可以进行改进：

• 这段代码使用了多行注释来描述每部分功能（例如"services", "postgres",等），这样的格式比较难以维护和阅读。建议改造成更简洁的单个注释或一个方法。
• POSTGRES_USER=${PANEL_DB_ROOT_USER} 可以通过process.env.PANEL_DB_ROOT_USER代替，这样可以在其他脚本中也保持一致性。

另外，在某些应用场景下，如果需要在容器启动时指定数据库配置文件的位置（如postgresql.conf),可以通过environment里的字符串替换为环境变量设置的方式更合适：

      - DATABASE_USERNAME: "${DATABASERUNNER_USER}"
         # ...

这个例子提供了一个简化的示例，实际的应用程序可能有更复杂的逻辑需求，请根据您的具体情况进行调整，希望对您有所帮助！