How to update supported fabric version for curseforge release pipeline

Get the versions from

https://minecraft.curseforge.com/api/game/versions?token=yourAPIKeyHere

The list is huge so Ctrl-F is your friend.

Since there can be multiple identical versions (eg. 1.18.1) for different platforms, each "version" also has a version type ID (that's the xxx: part in the workflow) that can be found from

https://minecraft.curseforge.com/api/game/version-types?token=yourAPIKeyHere

Basically, you first look at version-types for the correct type ID for the major version you're looking for, and then Ctrl-F for that ID in the versions endpoint to find the available slugs for that version.