Authentication using JWKUrl

Ah, looks like I missed a trick in my thing.

Yeah, but this does imply that we have to be able to validate the JWT with both the current key and the previous key.

:+1:

Yeah, so I’d avoid having that if it’s so bespoke - at least in a first cut, if loads of users want more firebase support, then go for it, but in a first version, we need the max age in the settings to accomodate more cases, so don’t complicate things.