Bump Python versions: drop 3.9 (EOL), add 3.15 (jaraco/skeleton#193)

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jaraco <308610+jaraco@users.noreply.github.com>

Author: Copilot

.github/workflows/main.yml

@@ -34,31 +34,31 @@ jobs:
       # https://blog.jaraco.com/efficient-use-of-ci-resources/
       matrix:
         python:
-        - "3.9"
+        - "3.10"
         - "3.13"
         platform:
         - ubuntu-latest
         - macos-latest
         - windows-latest
         include:
-        - python: "3.10"
-          platform: ubuntu-latest
         - python: "3.11"
           platform: ubuntu-latest
         - python: "3.12"
           platform: ubuntu-latest
         - python: "3.14"
           platform: ubuntu-latest
+        - python: "3.15"
+          platform: ubuntu-latest
         - python: pypy3.10
           platform: ubuntu-latest
     runs-on: ${{ matrix.platform }}
-    continue-on-error: ${{ matrix.python == '3.14' }}
+    continue-on-error: ${{ matrix.python == '3.15' }}
     steps:
       - uses: actions/checkout@v4
       - name: Install build dependencies
         # Install dependencies for building packages on pre-release Pythons
         # jaraco/skeleton#161
-        if: matrix.python == '3.14' && matrix.platform == 'ubuntu-latest'
+        if: matrix.python == '3.15' && matrix.platform == 'ubuntu-latest'
         run: |
           sudo apt update
           sudo apt install -y libxml2-dev libxslt-dev

pyproject.toml

@@ -20,7 +20,7 @@ classifiers = [
 	"Programming Language :: Python :: 3",
 	"Programming Language :: Python :: 3 :: Only",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 license = "MIT"
 dependencies = [
 ]