net-mgmt/victoria-metrics: update to version 1.61.1 (for real)

Previous update (b7932af8f5) to version 1.61.0 had been incorrectly
marked as update to version 1.61.1; it also missed the BUILDINFO_TAG
update. Luckily, upstream made a quick last-minute bugfix release,
so use this opportunity to update VictoriaMetrics ports and document
these unfortunate mistakes.

Reported by: portscout