Update actions and Python version in GHA CI

Author: bittner

.github/workflows/check.yml

@@ -24,10 +24,10 @@ jobs:
         - package
         - docs
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
+    - uses: actions/checkout@v5
+    - uses: actions/setup-python@v6
       with:
-        python-version: '3.12'
+        python-version: '3.13'
     - name: Install prerequisites
       run: python -m pip install tox
     - name: Run ${{ matrix.env }}

.github/workflows/publish.yml

@@ -13,10 +13,10 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
+    - uses: actions/checkout@v5
+    - uses: actions/setup-python@v6
       with:
-        python-version: '3.12'
+        python-version: '3.13'
     - name: Install prerequisites
       run: python -m pip install build twine wheel
     - name: Build package

.github/workflows/test.yml

@@ -33,8 +33,8 @@ jobs:
         - pypy-3.9
         - pypy-3.10
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
+    - uses: actions/checkout@v5
+    - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install prerequisites