Update dependency ipython to v9.4.0

Author: renovate[bot]

requirements.txt

@@ -7,7 +7,7 @@ decorator==5.2.1
 executing==2.2.0
 iniconfig==2.1.0
 ipykernel==6.29.5
-ipython==9.3.0
+ipython==9.4.0
 ipython_pygments_lexers==1.1.1
 ipywidgets==8.1.7
 jedi==0.19.2