Trapped in my career : Searching for a way forward

I wanted to reach out for some advice regarding my current situation at work. I’m working as a Guidewire developer, but I’m feeling quite stuck. I have no interest in this because the demand for Guidewire skills seems to be very limited, with only a few service-based companies utilizing it, and the compensation in those companies is quite low. I have aspirations to work at top companies in roles like frontend, backend, or DevOps. However, my heavy workload is making it challenging to prepare for these transitions. I’m worried that if I continue in this position for several years, my experience will be viewed as irrelevant when applying elsewhere, as companies are not actively seeking Guidewire engineers. I feel like I’m not growing in my current role and would really appreciate any suggestions or insights you might have on how to navigate this situation. I am feeling depressed these days due to this problem. Should I take a bold step and resign?