[SE-5149] Find new epic owner and schedule next steps for the epic
# Story
"As a Serenity member, I want the Billing v2 epic to have a new assignee, so that the new assignee takes over from @daniel-clemente in sprint 266 or whenever Serenity finds capacity."
# Full description
We're reaching the point when we'll be able to continue this epic. Up until now, [it was paused](https://gitlab.com/opencraft/billing/accounting/-/issues/1#note_681073190) because Serenity didn't have capacity.
@daniel-clemente [leaves](https://forum.opencraft.com/t/leaving-opencraft-in-february/1230/5) mid-sprint 266 (11th February 2022) so we'll need to find someone to continue the epic.
# Completion criteria
* Post in the forum to ask for volunteers, or ping people here
* Let people answer
* Choose someone
* Pass context and schedule next steps for the epic
* Provide secrets, and schedule tasks to do onboarding/offboarding as necessary
# Documentation updates & improvements criteria
* None in particular. Just let me know what Gitlab tasks should I expand or update as part of passing context.
# Review timeline
* This task may take more than 1 sprint
* _Finding a new epic owner_ and _restarting developments in this epic_ are two separate things. Finding an epic owner can be done soon (sprint 264 or 265). We don't know the part about capacity (it can take weeks or months).
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