invoke-webrequest issue in azure vm extension

Hi Team,

My bootstrap script is in private github. And it is self-signed.
Now i tried to download the script from github using invoke-webrequest command using vm extension for single vm arm template.
However i'm getting that invoke-webrequest is failed due to SSL/TSL errror, Seems it is has self-signed cert.

Kindly help me to sort out this issue or if you any work around to fix it.

No repository file, test, or entry point is named. Start with the VM extension bootstrap flow and the Invoke-WebRequest call against the private GitHub script, then determine the expected handling of its self-signed certificate and TLS error; the issue does not define a verifiable done state.

Written by the indexing model from the issue text.