As of now, the 40th year since launch, the Voyager mission webpage is a fairly nice dynamic page with distance from earth/sun, mission elapsed time, and cosmic ray data:
https://voyager.jpl.nasa.gov/mission/status/
A few years ago, there were weekly "Voyager Mission Operations Status Reports" which included propellant consumed and remaining, and RTG Watts (Output) and the operating Margin.
They appeared to trail off around January 16th, 2015, but the Wayback Machine has them:
https://web.archive.org/web/20150427094931/...weekly-reports/
There is also a @NSFVoyager2 Twitter account that is still putting out engineering information:
https://twitter.com/nsfvoyager2?lang=en
(Such as: CCS: END BASELINE SEQUENCE B176: BEGIN BASELINE SEQUENCE B177: LOCK STAR (2017:234:012611:2T))
All of that said, does anyone know where the nitty-gritty engineering information is being published these years? And I don't care if it's weekly-- that was perhaps too high fidelity. But I'd be curious to see annual or monthly reports.