Usually on github, projects will show the way to sponsor on the readme. If there's no obvious way, I usually just create an issue and offer to sponsor if they havent set up anything.
If you can't upgrade AND you have a namecheap API key, the following command will update all of you alias records.
NAMECHEAP_KEY=<YOUR namecheap key> sway namecheap update ip
Also the hoppy service has worked as a solution for some.