Backport PR #25524: Add ipykernel as an explicit doc dependency

QuLogic · meeseeksmachine · commit 6662da4ab89f · 2023-03-21T23:27:36.000Z
diff --git a/requirements/doc/doc-requirements.txt b/requirements/doc/doc-requirements.txt
@@ -11,6 +11,7 @@ sphinx>=3.0.0,!=6.1.2
 colorspacious
 ipython
 ipywidgets
+ipykernel
 numpydoc>=1.0
 packaging>=20
 pydata-sphinx-theme~=0.12.0
