Add support for Python 3.14

Python 3.14 to be released on 7 Oct 2025, changelog at https://docs.python.org/3.14/whatsnew/3.14.html

Author: weiji14

.github/workflows/ci.yaml

@@ -28,6 +28,7 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
         os:
           - runner: ubuntu-latest
             duckdb-slug: linux-amd64

pyproject.toml

@@ -13,8 +13,8 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
-    "Programming Language :: Python :: Implementation :: PyPy",
     "Programming Language :: Rust",
     "Typing :: Typed",
 ]