Bump the CI platforms to most recent Debian and Ubuntu

New APT deb822 code requires recent python-apt (>= 2.5), which is available only
from Bookwork and Lunar on.

.github/workflows/ci.yaml

@@ -41,10 +41,8 @@ jobs:
       fail-fast: false
       matrix:
         container:
-          - debian:bullseye-slim
+          - debian:bookworm-slim
           - debian:testing-slim
-          - ubuntu:jammy
-          - ubuntu:kinetic
           - ubuntu:lunar
     container:
       image: ${{ matrix.container }}
@@ -122,8 +120,6 @@ jobs:
       fail-fast: false
       matrix:
         container:
-          - ubuntu:jammy
-          - ubuntu:kinetic
           - ubuntu:lunar
     container:
       image: ${{ matrix.container }}
@@ -157,7 +153,7 @@ jobs:
           files: ./coverage.xml,./coverage-setup.xml
 
   integration-tests-installed:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-23.04
     strategy:
       fail-fast: false
     steps:
@@ -206,8 +202,6 @@ jobs:
       fail-fast: false
       matrix:
         container:
-          - ubuntu:jammy
-          - ubuntu:kinetic
           - ubuntu:lunar
     container:
       image: ${{ matrix.container }}
@@ -237,8 +231,6 @@ jobs:
       fail-fast: false
       matrix:
         container:
-          - ubuntu:jammy
-          - ubuntu:kinetic
           - ubuntu:lunar
     container:
       image: ${{ matrix.container }}
@@ -278,7 +270,7 @@ jobs:
           files: ./coverage.xml
 
   system-tests-installed:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-23.04
     strategy:
       fail-fast: false
     steps: