fix(banner): correct visudo validate, clean trailing whitespace

roles/global_defaults/tasks/system.yml

@@ -229,7 +229,6 @@
     - name: Initialize normalized disk list
       ansible.builtin.set_fact:
         system_disks_cfg: []
-    
 
     - name: Build normalized system disk configuration
       vars:
@@ -289,7 +288,6 @@
     - name: Update system configuration with normalized disks
       ansible.builtin.set_fact:
         system_cfg: "{{ system_cfg | combine({'disks': system_disks_cfg}, recursive=True) }}"
-    
 
     - name: Set install_drive from primary disk
       when:
@@ -297,4 +295,4 @@
         - system_disks_cfg[0].device | string | length > 0
       ansible.builtin.set_fact:
         install_drive: "{{ system_disks_cfg[0].device }}"
-    
+