Fail to install compas in ironpython environment

Started since compas version 2.1.1, the automatic testing workflow in `compas_fab` fails during installation. This affected only the windows-ironpython environment but not linux. @gonzalocasas also told me that this affected compas_eve too. The failed workflow log can be found here:

https://github.com/compas-dev/compas_fab/actions/runs/9294697625/job/25580341228#step:3:837

```
Processing d:\a\compas_fab\compas_fab\compas.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
IOError: [Errno 2] Could not find file 'c:\users\runneradmin\appdata\local\temp\pip-rrofyb-build\setup.py'.: c:\users\runneradmin\appdata\local\temp\pip-rrofyb-build\setup.py

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in c:\users\runneradmin\appdata\local\temp\pip-rrofyb-build\
```

As a test, I have tried to pin the version to 2.1.0 (in this branch: https://github.com/compas-dev/compas_fab/pull/427/files) and the test can pass. So I think it is related to some changes in 2.1.1
from `curl -o compas.tar.gz -LJO https://pypi.debian.net/COMPAS/latest` to `curl -o compas.tar.gz -LJO https://pypi.debian.net/COMPAS/COMPAS-2.1.0.tar.gz `