Increase rate-limit for swh_api_origin_visit_latest.
Increase rate-limit for swh_api_origin_visit_latest.

This endpoint is being introduced to replace a more data intensive
'internal' endpoint that wasn't rate-limited (_origin_latest_snapshot).

SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site