Hi @Doria ,
By "updating GPOs" do you mean the administrative templates? If you want newer administrative templates for the GPOs you can download them from here:
Administrative Templates (.admx) for Windows 10 May 2020 Update (2004)
https://www.microsoft.com/en-us/download/101445
To update the existing administrative template files you can refer to the official documentation below:
Updating the Administrative Templates files
https://learn.microsoft.com/en-us/troubleshoot/windows-client/group-policy/create-and-manage-central-store#updating-the-administrative-templates-files
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Best regards,
Leon