fix: 修复清华源安装pipenv被屏蔽访问的问题

[xianglongfei-8888]

使用清华源安装 pipenv 包时，被拒绝访问，导致安装失败

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: xianglongfei-8888

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[deepin-ci-robot]

Hi @xianglongfei-8888. Thanks for your PR.

I'm waiting for a linuxdeepin member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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