Test with Python 3.14 on CI

Author: ankane

.github/workflows/build.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: [3.13, 3.9]
+        python: [3.14, 3.9]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5