fix: use correct release codename for Ubuntu targets when adding repositories

tasks/configure_package_repositories.yml

@@ -23,6 +23,18 @@
         - "/etc/apt/keyrings/slub-sdvdebianrepo-key.asc"
         - "/etc/apt/sources.list.d/slub.list"
 
+    - name: Configure additional repos for Debian-based repos.
+      when: ansible_os_family == "Debian"
+      block:
+        - name: >
+            Set Mapping for Debian- and Ubuntu-Releasenames. This is necessary,
+            because SLUB's Debian repo server doesn't support Ubuntu releases
+            (yet?). Whenever this restriction is removed, then we can remove
+            the mapping as well.
+          ansible.builtin.set_fact:
+            releasenames:
+              jammy: "bookworm"
+              # noble: "?????????"
         - name: add custom repo for SLUB's custom Debian repo
           ansible.builtin.deb822_repository:
             architectures: "amd64"
@@ -31,7 +43,7 @@
             name: "slub"
             pdiffs: true
             signed_by: "{{ vault_debrepo_url }}deb-repository/pub.gpg.key"
-        suites: "{{ ansible_lsb.codename }}"
+            suites: "{{ ( ansible_distribution == 'Ubuntu' ) | ternary( releasenames[ansible_lsb.codename], ansible_lsb.codename ) }}"
             uris: "{{ vault_debrepo_url }}deb-repository"
           notify: update package cache
         - name: >