Thanks for the hint, I have three Govee lights already setup as scenes in SmartThings using Groovy. These then stopped working recently with groovy being discontinued.
Now I got it working again by adding virtual switches (thanks TAustin for those) to the already existing ST scenes (scenes my Google home and Flic setup also uses). The virtual switches then triggers the Govee lights via IFTTT. A bit fiddly setup but it works fine, and latency is ok’ish (like 1-3sec)