Backport PR #2173 on branch v3.4.x (IPython 8.13+ is Python 3.9 only) (…

…#2175)

* Backport PR #2173: IPython 8.13+ is Python 3.9 only

* No more warning in test_slice

* Actually just ignore the warning

---------

Co-authored-by: P. L. Lim <2090236+pllim@users.noreply.github.com>

jdaviz/configs/cubeviz/plugins/slice/tests/test_slice.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 import numpy as np
 
@@ -56,7 +58,8 @@ def test_slice(cubeviz_helper, spectrum1d_cube):
     # test setting a static 2d image to the "watched" flux viewer to make sure it disconnects
     mm = app.get_tray_item_from_name('cubeviz-moment-maps')
     mm.add_to_viewer_selected = 'flux-viewer'
-    with pytest.warns(UserWarning, match='No observer defined on WCS'):
+    with warnings.catch_warnings():
+        warnings.filterwarnings('ignore', message=r'.*No observer defined on WCS.*')
         mm.vue_calculate_moment()
 
     assert len(sl._watched_viewers) == 2

setup.cfg

@@ -27,6 +27,7 @@ install_requires =
     glue-core>=1.6.0,!=v1.9.0
     glue-jupyter>=0.15.0
     echo>=0.5.0
+    ipython<8.13;python_version=='3.8'
     ipykernel>=6.19.4
     ipyvue>=1.6
     ipyvuetify>=1.7.0