Fix deb repository path

Update cache before installing package

tasks/packages.yml

@@ -1,17 +1,18 @@
 ---
-- name: "Packages | Backport-Repository hinzufügen"
+- name: "Packages | Add backports repository"
   ansible.builtin.apt_repository:
-    repo: "deb {{ apt_base_url }}/debian {{ ansible_distribution_release }}-backports main"
+    repo: "deb {{ apt_base_url }} {{ ansible_distribution_release }}-backports main"
     state: present
 
-- name: "Packages | Install dependencies"
-  ansible.builtin.apt:
-    pkg:
-      - python3-pexpect
-
 - name: "Packages | Install borgbackup and borgmatic"
   ansible.builtin.apt:
     pkg:
       - borgbackup
       - borgmatic
     default_release: "{{ ansible_distribution_release }}-backports"
+    update_cache: true
+
+- name: "Packages | Install dependencies"
+  ansible.builtin.apt:
+    pkg:
+      - python3-pexpect