changelog: Update bitbucket mercurial ingestion status
It's mostly finished, remains 6 concurrent ingestions which have been running for weeks now. So that should eventually finish.
That should not be blocking to update the changelog.
In the mean time, that will alleviate my mental load about it.
Related to swh/infra/sysadm-environment#3338 (closed)
Migrated from D6474 (view on Phabricator)