python: enable testing for 3.13

Python 3.13 is in beta and Fedora 41 is preparing to make it the default
system interpreter; enable testing for it.

(In the event problems develop prior to release, it should only impact
the check-python-tox job, which is not run by default and is allowed to
fail.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20240626232230.408004-5-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

python/setup.cfg

@@ -19,6 +19,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Typing :: Typed
 
 [options]
@@ -184,7 +185,7 @@ multi_line_output=3
 # of python available on your system to run this test.
 
 [tox:tox]
-envlist = py38, py39, py310, py311, py312
+envlist = py38, py39, py310, py311, py312, py313
 skip_missing_interpreters = true
 
 [testenv]

tests/docker/dockerfiles/python.docker

@@ -14,6 +14,7 @@ ENV PACKAGES \
     python3.10 \
     python3.11 \
     python3.12 \
+    python3.13 \
     python3.8 \
     python3.9