Update ipython version to 8.4.0

Author: jan-janssen

.ci_support/environment-old.yml

@@ -9,7 +9,7 @@ dependencies:
 - pyzmq =25.0.0
 - h5py =3.7.0
 - networkx =2.8.8
-- ipython =7.33.0
+- ipython =8.4.0
 - pydantic =2.5.3
 - pygraphviz =1.10
 - hatchling =1.33.0