Fix email configuration for `conduct@epiverse.org`

[avallecam]

In the CoC, we have this emal:

.github/CODE_OF_CONDUCT_en.md

Line 87 in 8681a6b

**Email:** Send a report to [conduct@epiverse.org](mailto:conduct@epiverse.org)

But after sending a test email to it, I got:

The group conduct only accepts messages from people in its organization or on its allowed senders list, and your email address isn't on the list.