More recent fedora does not have our minimum python versions
anymore.  Stick with the most common fedora version used in
7.2.x in other places, which is 37.  This way, python tests
works again.

This is a 7.2-specific change, not aimed for the master branch.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/tests/docker/dockerfiles/python.docker b/tests/docker/dockerfiles/python.docker
index 175c10a34e..8cc5d3567e 100644
--- a/tests/docker/dockerfiles/python.docker
+++ b/tests/docker/dockerfiles/python.docker
@@ -1,6 +1,6 @@
 # Python library testing environment
 
-FROM fedora:latest
+FROM fedora:37
 MAINTAINER John Snow <jsnow@redhat.com>
 
 # Please keep this list sorted alphabetically
-- 
2.47.3