Fix 404 for OPYN_LIST url (their file name changed)

[fadomire]

Summary

there is a 404 when requesting the opyn-tokenlist

they changed their filename in this commit:
opynfinance/opyn-tokenlist@409fdc8

This PR update the previous url with the new one

[github-actions]

CLA Assistant Lite All Contributors have signed the CLA.

[fadomire]

I have read the CLA Document and I hereby sign the CLA

[alfetopito]

Looks good:

I mean, we have to work a bit on the contrast for dark mode, but it works as expected :)

[alfetopito]

Thanks for the contribution by the way :)

[anxolin]

Thanks for the contribution! it works, however, why Opyn list don't include the image of the token?

Can you make sure they change their list to include logoURI? Check out this example https://raw.githubusercontent.com/SetProtocol/uniswap-tokenlist/main/set.tokenlist.json