As of the moment, the following connections are still using basic authentication, once the basic authentication is disabled then workflows using these actions will no longer be working. Since this is commonly used within our organization, I suggest to have it updated to use modern authentication
Office 365 add user to group
Office 365 add user to security group
Office 365 check in items
Office 365 create site
Office 365 delete site
Office 365 Query User Profile