lint: .yml -> .yaml

roles/packages/tasks/apt.yaml

@@ -0,0 +1,20 @@
+---
+- name: Ensure packages defined in install_packages are installed
+  ansible.builtin.apt:
+    name: "{{ install_packages }}"
+    state: present
+    update_cache: true
+
+- name: Ensure packages defined in backports_packages are installed
+  when: backports_packages is defined
+  block:
+    - name: Enable backports
+      ansible.builtin.apt_repository:
+        repo: "deb http://deb.debian.org/debian {{ ansible_distribution_release }}-backports main"
+        filename: backports
+
+    - name: Install backports packages
+      ansible.builtin.apt:
+        name: "{{ backports_packages }}"
+        state: present
+        default_release: "{{ ansible_distribution_release }}-backports"