Action that uses curl to send your webmentions. It gets the most recent addition to a JSON feed (ideally, your latest post), looks for the value of a key called uri (ideally, your post's permalink) and sends webmentions for it.
The services currently in the file are webmention.app and brid.gy, but any service that can be triggered with a POST request will work fine with this.
This workflow file is run once another GitHub Action named "Build" completes successfully.