Add Python 3.14 to test matrix

Author: kislyuk

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
       max-parallel: 8
       matrix:
         os: [ubuntu-20.04, ubuntu-latest, macos-13, macos-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5