Description: Ignore exceptions in documentation examples

Some examples download data, and/or depend on
packages Debian doesn't have, so can't run in a Debian build

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Forwarded: not-needed

--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -472,6 +472,7 @@ extlinks = {
 }
 
 
+ipython_warning_is_error = False
 ipython_execlines = [
     "import numpy as np",
     "import pandas as pd",