From a quick scan of the card instructions on github it would appear that the min and max temperature options do not support templates. So your only option to change them would be to use this:
Note that it uses JavaScript, not the Jinja templates used elsewhere in home assistant.
If you want some help with this I suggest you share your (correctly formatted for the forum) card config. and season sensor entity id.
I am not well versed in JS compared to Jinja so it may require someone else to help you.