Pin python in the env

To match the pyproject

Signed-off-by: liamhuber <liamhuber@greyhavensolutions.com>

Author: liamhuber

.ci_support/environment.yml

@@ -10,5 +10,6 @@ dependencies:
 - ipytree =0.2.2
 - ipywidgets =8.1.8
 - nodejs =25.2.1
+- python >=3.11,<3.13
 - pyiron_workflow =0.15.4
 - traitlets =5.14.3