Add python 3.14 unit tests (#2122)

Author: micafer

.github/workflows/main.yml

@@ -36,6 +36,7 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
           # cryptography is not compatible with older PyPy versions
           - "pypy-3.10"
         os:

tox.ini

@@ -30,6 +30,7 @@ basepython =
     {py3.11,py3.11-dist,py3.11-dist-wheel}: python3.11
     {py3.12,py3.12-dist,py3.12-dist-wheel}: python3.12
     {py3.13-dev,py3.13-dev-dist,py3.13-dev-dist-wheel}: python3.13
+    {py3.14-dev,py3.14-dev-dist,py3.14-dev-dist-wheel}: python3.14
 setenv =
   CRYPTOGRAPHY_ALLOW_OPENSSL_102=1
 # NOTE: By default we run tests on CI in parallel to speed up the build