Add Python 3.14 to CI matrix and declare requires-python

Add 3.14 to the GitHub Actions matrix and the tox envlist (kept in sync),
and set requires-python = ">=3.8" in pyproject.toml so the declared support
matches what is actually tested.

Author: eliasdabbas

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v4

pyproject.toml

@@ -9,6 +9,7 @@ authors = [
     {name = "Elias Dabbas", email = "eliasdabbas@gmail.com"}
 ]
 
+requires-python = ">=3.8"
 classifiers = [
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py38, py39, py310, py311, py312, py313
+envlist = py38, py39, py310, py311, py312, py313, py314
 requires =
     tox>=4.0
     tox-uv>=1.11.0