We have already added the latest version of GTDB (226.0) to RESCRIPt. It is currently available in version 2025.4 — and will be included in the next release of QIIME 2 and MOSHPIT (which should be available this week). So given the timing, I suggest just waiting a few days for the offiical release.
The release is now live, so it should be possible to use this with a fresh install following the install instructions for the distribution you're interested in: