Locally, I’ve not been able to find anything that is certified food safe, only various epoxy fillers and primers for boats.

Call the manufacturer of the locally-available epoxies and ask them what they recommend.

I went looking for contact info for one common brand as an example, but found instead this product support article that suggests, to me at least, that their “limited food contact”-rated epoxies would be good enough for your use-case.

(I never did find a phone number or email for product support, but they do at least have a chat widget, so… 🤷)