Refresh SourceHut CI manifests

.builds/archlinux-py313.yml

@@ -35,8 +35,11 @@ environment:
   REQUIREMENTS: release
   # TODO: ETESYNC_TESTS
 tasks:
-  - check-python:
-      python --version | grep 'Python 3.13'
+  - check-python: |
+      python - <<'PY'
+      import sys
+      assert (3, 13) <= sys.version_info[:2] <= (3, 14), sys.version
+      PY
   - docker: |
       sudo systemctl start docker
   - setup: |

.builds/tests-minimal.yml

@@ -1,30 +1,30 @@
 # Run tests using oldest available dependency versions.
 #
-# TODO: It might make more sense to test with an older Ubuntu or Fedora version
-# here, and consider that our "oldest suppported environment".
+# Debian bookworm keeps this job on Python 3.11, which still supports the
+# oldest aiohttp release in our minimal dependency set.
 
-image: alpine/3.19 # python 3.11
+image: debian/bookworm # python 3.11
 packages:
-  - docker
-  - docker-cli
+  - build-essential
+  - docker.io
   - docker-compose
-  - py3-pip
+  - python3-pip
   - python3-dev
+  - python3-venv
 sources:
   - https://github.com/pimutils/vdirsyncer
 environment:
   BUILD: test
   CI: true
   CODECOV_TOKEN: b834a3c5-28fa-4808-9bdb-182210069c79
-  DAV_SERVER: radicale xandikos
+  DAV_SERVER: xandikos
   REQUIREMENTS: minimal
 tasks:
   - venv: |
       python3 -m venv $HOME/venv
       echo "export PATH=$HOME/venv/bin:$PATH" >> $HOME/.buildenv
   - docker: |
-      sudo addgroup $(whoami) docker
-      sudo service docker start
+      sudo systemctl start docker
   - setup: |
       cd vdirsyncer
       # Hack, no idea why it's needed
@@ -33,4 +33,3 @@ tasks:
   - test: |
       cd vdirsyncer
       make -e ci-test
-      make -e ci-test-storage