I googled GitHub personal access tokens and got https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token

I googled GitHub personal access tokens and got https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token https://docs.github.com/en/authentication/keeping-your-accou... as the first hit. It covers expiration and links to another doc on token expiration at the end of the article. I don't want to assume that you haven't done that and seen that, but it's not linked in your post.