Hi,
While using stackstac, I noticed that it is not compatible with the proj extension 2.0. Specifically, based on the knowledge from the extension's repository:

the proj:epsg attribute has been deprecated and replaced with proj:code.

This is problematic because the deprecated proj:epsg is still being used by Stackstac.

Attached is an example of a catalog utilizing the proj extension 2.0:
https://stac.dataspace.copernicus.eu/v1/collections/sentinel-2-l2a/items/S2A_MSIL2A_20241107T113311_N0511_R080_T31VDH_20241107T123948

ss you can see, the projection is provided via proj:code but remains inaccessible to StackSTAC, which still looks for the hardcoded proj:epsg.

example stackstac output: