Update tox and CI job Python versions

3.8 and 3.9 are EOL, 3.13 and 3.14 exist.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

ci/tox.yaml

@@ -8,7 +8,7 @@
         name: ensure-tox
     - name: Install all Python versions to test
       package:
-        name: ['python3.8', 'python3.9', 'python3.10', 'python3.11', 'python3.12']
+        name: ['python3.10', 'python3.11', 'python3.12', 'python3.13', 'python3.14']
         state: present
       become: yes
     - name: Run tox

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 skipsdist = True
-envlist = py38,py39,py310,py311,py312,coverage-report
+envlist = py310,py311,py312,py313,py314,coverage-report
 skip_missing_interpreters = true
 [testenv]
 ignore_errors = true