GitHub Copilot显示以下错误时的解决办法

从2024年4月19日左右开始，GitHub Copilot变得无法使用了。错误信息如下：

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[ERROR] [ghostText] [2024-04-21T04:06:46.900Z] Error on ghost text request: (FetchError) unable to verify the first certificate
[ERROR] [certificates] [2024-04-21T04:06:46.901Z] Your current Copilot license doesn't support proxy connections with custom certificates. Please visit https://gh.io/copilot-network-errors to learn more. Original cause: {"type":"system","_name":"FetchError","code":"UNABLE_TO_VERIFY_LEAF_SIGNATURE"}