drop 3.8, pypy3.9 and support 3.13, pypy3.11

Author: hhatto

.github/workflows/python-package.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', 'pypy3.9', 'pypy3.10']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', 'pypy3.10', 'pypy3.11']
 
     steps:
     - uses: actions/checkout@v5
@@ -29,7 +29,7 @@ jobs:
         python -m pip install .
         python -m pip install ".[dev]"
     - name: Install pyarrow
-      if: matrix.python-version == '3.11'
+      if: matrix.python-version == '3.13'
       run: |
         python -m pip install pyarrow
     - name: Lint with ruff