Test on free threaded Python 3.14t (#49)

https://py-free-threading.github.io/porting

Author: cclauss

.github/workflows/tests.yml

@@ -9,15 +9,15 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
       - run: pip install tox
       - run: tox -e lint
   mypy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
       - run: pip install tox
       - run: tox -e mypy
   tests:
@@ -32,9 +32,10 @@ jobs:
           - {python: '3.12', tox: py312}
           - {python: '3.13', tox: py313}
           - {python: '3.14', tox: py314}
+          - {python: '3.14t', tox: py314t}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
       - run: pip install tox
@@ -44,8 +45,8 @@ jobs:
     env:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
       - run: pip install tox coveralls
       - run: tox -e coverage
       - run: coveralls --service=github