Update environment-docs.yml

.ci_support/environment-docs.yml

@@ -17,7 +17,7 @@ dependencies:
 - pandas =2.2.2
 - phonopy =2.26.6
 - pint =0.24.3
-- pyiron_base =0.9.7
+- pyiron_base =0.9.9
 - pyiron_snippets =0.1.2
 - pylammpsmpi =0.2.21
 - pyscal3 =3.2.6