[ci] Add python 3.14 runners for pytest workflow (#270)

* [ci] Add python 3.14 runners for pytest workflow

* [ci] Deactivate -Werror option in pytest workflow to fix python 3.14
runner

* [ci] Run tests with Werror for all python versions but for 3.14

Author: fjosw

.github/workflows/pytest.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
         include:
           - os: macos-latest
             python-version: "3.12"
@@ -42,5 +42,10 @@ jobs:
           uv pip install pytest pytest-cov pytest-benchmark hypothesis --system
           uv pip freeze --system
 
-      - name: Run tests
+      - name: Run tests with -Werror
+        if: matrix.python-version != '3.14'
         run: pytest --cov=pyerrors -vv -Werror
+
+      - name: Run tests without -Werror for python 3.14
+        if: matrix.python-version == '3.14'
+        run: pytest --cov=pyerrors -vv