Could you not just change the tyres then, rather than upgrade the wheels?
What width are the current rims? You will probably find they can take wider tyres without any issues.
I am running my e-bike with 38mm tyres, the supplied tyres were 32mm. It's a Merida e-Scultura 400.
Edit to add... Out of curiosity, I looked up the spec of your bike. The supplied tyres should be 40mm wide. For gravel/trail, non MTB type riding, they should be fine - unless your after something with a different tread pattern? Puncture protection?