This is more complicated than I thought.
Need to find the TrueNAS Community Chart number that corresponds to Immich v1.132.0
Somehow tell TrueNAS to use that Chart number (from what I can see, there's no way to do this, but I'm a novice TrueNAS user)
Start Immich at least once using Immich v1.132.0
Upgrade to the latest chart number, which is v1.9.17 at the time of this writing.
The problem I see is that I can't tell TrueNAS to use a specific chart number for Immich, even when trying to install a new version. I only ever have one option, which is the latest version.
I'm unsure how the HexOS Team could automate this upgrade process to make it invisible to the user. Maybe that's why it's taking so long?