fix: resolve yamllint errors

- Fix line length in meta/argument_specs.yml (wrap long description)
- Remove extra blank lines in molecule/default/collections.yml
- Fix line lengths in tasks/main.yml (wrap long messages)
- Remove trailing spaces from tasks/main.yml
- Ensure all YAML files pass yamllint with relaxed profile

tasks/main.yml

@@ -67,7 +67,9 @@
 
     - name: Fail due to invalid configuration
       ansible.builtin.fail:
-        msg: "Configuration validation failed. Changes have been reverted. Check the logs for named-checkconf errors."
+        msg: |
+          Configuration validation failed. Changes have been reverted.
+          Check the logs for named-checkconf errors.
 
   always:
     - name: Remove backup files
@@ -77,8 +79,8 @@
       loop: "{{ bind9_config }}"
       loop_control:
         label: "{{ item.name }}"
-      when: bind9_backup_config | bool is false # Keep if backup is forced, otherwise cleanup temporary atomic backup
-  
+      when: bind9_backup_config | bool is false
+
   tags:
     - bind9
     - template