[BUG] ci-sage is outdated

[dimpase]

setuptools version

all

Python version

all

OS

all

Additional environment information

No response

Description

ci-sage (cf #3616) refers to outdated git repos and https://trac.sagemath.org, no longer meaningful. since sagemath's move to github.

Expected behavior

it should pull from https://github.com/sagemath/sage instead

How to Reproduce

CI with Sage is broken.

Output

n/a

[dimpase]

@mkoeppe