Fix CI pipeline after maintenance

Summary

IT dept did a heavy maintenance operation and the CI pipeline is broken.

Steps to reproduce

Run any pytest job.

Example Project

See branches 178 or 186-cplantbox-as-a-submodule-for-co-simulation-2 for example.

What is the current bug behavior?

Pipeline fails at environment creation.

What is the expected correct behavior?

Pipeline runs like before maintenance.

Relevant logs and/or screenshots

[...]
Linking gettext-0.25.1-h3f43e3d_1
Linking libsystemd0-257.9-h996ca69_0
Linking gdk-pixbuf-2.44.3-h2b0a6b4_0

error    libmamba response code: -1 error message: Invalid argument
critical libmamba failed to execute pre/post link script for gdk-pixbuf
section_end:1760945503:step_script

Possible fixes

Suggestion from ChatGPT :

It’s almost always an environment corruption issue, typically linked to a broken or incomplete package cache, especially in shared runners or after system changes.

See comments and commits for more details.