chore: switch CI to Ubuntu 24.04; add Python 3.13 and use it by default.

Author: felixfontein

.github/workflows/release.yml

@@ -19,10 +19,10 @@ jobs:
       TOX_PARALLEL_NO_SPINNER: 1
 
     steps:
-      - name: Switch to using Python 3.10 by default
+      - name: Switch to using Python 3.13 by default
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.13"
 
       - name: Install tox
         run: >-

.github/workflows/tox.yml

@@ -15,7 +15,7 @@ on:
 jobs:
   pre:
     name: pre
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     outputs:
       matrix: ${{ steps.generate_matrix.outputs.matrix }}
     steps:
@@ -24,15 +24,15 @@ jobs:
         uses: coactions/dynamic-matrix@v1
         with:
           min_python: "3.10"
-          max_python: "3.12"
-          default_python: "3.10" # used by jobs in other_names
+          max_python: "3.13"
+          default_python: "3.13" # used by jobs in other_names
           other_names: |
             lint
             pkg
             devel
   build:
     name: ${{ matrix.name }}
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     needs: pre
     env:
       PYTEST_REQPASS: 14
@@ -65,7 +65,7 @@ jobs:
 
     needs:
       - build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Decide whether the needed jobs succeeded or failed
         uses: re-actors/alls-green@release/v1