Since Python 3.10 the output of a CLI program created with argparse
uses "options" instead of "optional arguments". This behaviour breaks
the tests in python-uqbar.

--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -84,7 +84,7 @@ def test_call_help():
 
         speak like a cat
 
-        optional arguments:
+        options:
           -h, --help  show this help message and exit
           --version   show program's version number and exit
           --loud      be adamant
@@ -101,6 +101,6 @@ def test_help():
         """
         usage: vox-aggregator [-h] [--version] {help,list,birds,mammals} ...
 
-        optional arguments:
+        options:
           -h, --help            show this help message and exit
           --version             show program's version number and exit