Use bookworm for all tests

.gitlab-ci.yml

@@ -25,7 +25,7 @@ variables:
       ${APT_PROXY:+-e config.apt_proxy=${APT_PROXY}}
       $CREATE_ENV_VARS $BUILD_DIR
 
-    - with-ssh-key floatup ${LIBVIRT:+--ssh $LIBVIRT} --inventory $BUILD_DIR/hosts.yml --ram 2048 --cpu 2 --image ${VM_IMAGE:-bullseye} ${FLOATUP_ARGS} up
+    - with-ssh-key floatup ${LIBVIRT:+--ssh $LIBVIRT} --inventory $BUILD_DIR/hosts.yml --ram 2048 --cpu 2 --image ${VM_IMAGE:-bookworm} ${FLOATUP_ARGS} up
     - with-ssh-key ./test-driver init --no-vagrant $BUILD_DIR
     - with-ssh-key ./test-driver run $BUILD_DIR
   after_script:
@@ -46,15 +46,15 @@ variables:
 base_test:
   <<: *base_test
   variables:
-    VM_IMAGE: "bullseye"
-    CREATE_ENV_VARS: "-e config.float_debian_dist=bullseye -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
+    VM_IMAGE: "bookworm"
+    CREATE_ENV_VARS: "-e config.float_debian_dist=bookworm -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
     TEST_DIR: "test/base.ref"
 
 full_test:
   <<: *base_test
   variables:
-    VM_IMAGE: "bullseye"
-    CREATE_ENV_VARS: "-e config.float_debian_dist=bullseye -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
+    VM_IMAGE: "bookworm"
+    CREATE_ENV_VARS: "-e config.float_debian_dist=bookworm -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
     TEST_DIR: "test/full.ref"
   rules:
     - if: $CI_MERGE_REQUEST_ID == ''
@@ -64,8 +64,8 @@ full_test_review:
   after_script:
     - with-ssh-key ./test-driver cleanup --no-vagrant $BUILD_DIR
   variables:
-    VM_IMAGE: "bullseye"
-    CREATE_ENV_VARS: "-e config.float_debian_dist=bullseye -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
+    VM_IMAGE: "bookworm"
+    CREATE_ENV_VARS: "-e config.float_debian_dist=bookworm -e inventory.group_vars.vagrant.ansible_python_interpreter=/usr/bin/python3"
     FLOATUP_ARGS: "--state-file .vmine_group_review_$CI_MERGE_REQUEST_ID --ttl 6h --env deploy.env --dashboard-url https://vm.investici.org"
     TEST_DIR: "test/full.ref"
   allow_failure: true