Extend testing to py3.15

Signed-off-by: Michał Górny <mgorny@gentoo.org>

Author: mgorny

.github/workflows/ci.yaml

@@ -4,7 +4,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14-dev", "pypy-3.10", "pypy-3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15-dev", "pypy-3.10", "pypy-3.11"]
         depset: ["min", "full"]
         os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: false

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = qa,{py39,py310,py311,py312,py313,py314,pypy310,pypy311}-{min,full}
+envlist = qa,{py39,py310,py311,py312,py313,py314,py315,pypy310,pypy311}-{min,full}
 isolated_build = True
 
 [testenv]