Bump minimum supported Python version to 3.9

Also test on Python 3.13.

Author: Edward-Knight

.github/workflows/test.yml

@@ -5,16 +5,16 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python-version: ["3.8"]
+        python-version: ["3.9"]
         include:
-          - os: ubuntu-latest
-            python-version: "3.9"
           - os: ubuntu-latest
             python-version: "3.10"
           - os: ubuntu-latest
             python-version: "3.11"
           - os: ubuntu-latest
             python-version: "3.12"
+          - os: ubuntu-latest
+            python-version: "3.13"
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout

pyproject.toml

@@ -18,7 +18,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Topic :: System :: Operating System Kernels :: Linux",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dynamic = ["version", "description"]
 
 [project.urls]