The url attribute in the Variable class already has the form of https://api.github.com/repos/OWNER/REPO/actions/variables/VAR_NAME

However the edit and delete commands also append /actions/variables/VAR_NAME onto this leading to https://api.github.com/repos/OWNER/REPO/actions/variables/VAR_NAME/actions/variables/VAR_NAME

This causes a 404 and so the commands don't work. Either the edit/delete commands need to no longer append this string or the self.url attribute should not include it