I believe Provider for Google Calendar uses the Google Tasks API. There was a reply on Stackoverflow from September 2019 which stated that the Google Tasks API doesn't allow for recurring tasks.
Also I looked around the Google Tasks API site. I also searched the site using the words recur and repeat. I didn't find any mention of recurring or repeating tasks. It refers to a task as "A single task containing information such as the title of the task, notes, the due date, and the completed date."
But I'm no expert. This is what I found in searching for an answer.