There's a chance. The series is popular and graphic novels are a great way to reach a wider audience. But it also depends on the availability of the creative team, like illustrators and writers. If they all can come together again and there's a good story idea, then yes. But until there's an official word, we can't be sure.
As of now, there's no official announcement regarding another Wings of Fire graphic novel. However, the series has been quite successful, and the concept lends itself well to the graphic novel format. So, while it's not certain, there's a possibility. The publisher might be waiting to see how sales of the existing graphic novels continue to perform before making a decision. Also, the author might be focused on other aspects of the Wings of Fire franchise, like writing new prose novels. But fans' enthusiasm could sway things in the direction of a new graphic novel.
It's hard to say for sure. Sometimes it depends on the popularity and sales of the previous ones. But you can check relevant book news sites regularly for updates.