ops does not support HTTP_PROXY and HTTPS_PROXY env var

- [x] I have searched the [issues](https://github.com/apache/openserverless/issues) of this repository and believe that this is not a duplicate.

### Ⅰ. Issue Description
Since we are using the go git library it is supposed it supports the standard environment variables HTTP(S)_PROXY ... but it does not.

### Ⅱ. Describe what happened

seth the variables, and try ops -update... error!

### Ⅲ. Describe what you expected to happen

it should work!

### Ⅳ. How to reproduce it (as minimally and precisely as possible)

set the variables and try it

### Ⅴ. Anything else we need to know?

### Ⅵ. Environment:

- K8S Runtime and version:
- OPS CLI version: 0.1.0-2409121919.dev
- Others:

从 ops CLI 的更新路径及其对 Go git library 的使用入手；设置 HTTP_PROXY 和 HTTPS_PROXY 后重现故障，然后跟踪这些变量如何传递到 git 操作。完成标准是 `ops -update` 能够通过已配置的代理正常工作，并为环境变量添加回归检查。

由索引模型根据 Issue 内容生成。