fix 🐛: Ensure snippets storage is enabled

This commit updates the `tasks/testing.yml` file to correctly enable the 'snippets' storage for Proxmox. The change ensures that the snippets storage directory is properly configured, resolving an issue where snippets were not being utilized. This update improves the Proxmox setup process and ensures snippets functionality.

tasks/testing.yml

@@ -13,12 +13,11 @@
     - name: "[PREFLIGHT] Ensure 'snippets' is enabled for {{ proxmox_snippets_storage }}"
       ansible.builtin.replace:
         path: /etc/pve/storage.cfg
-        regexp: '^(\s*content\s*=.*?)(?<!snippets)$'
+        regexp: '(?ms)(dir:\s*{{ proxmox_snippets_storage }}.*?content\s*=.*?)(?<!snippets)$'
         replace: '\1,snippets'
-        multiline: true
       vars:
         proxmox_snippets_storage: local
-        
+
     - name: "[PREFLIGHT] Ensure snippets storage directory exists"
       ansible.builtin.file:
         path: "{{ proxmox_snippets_storage_path }}/snippets"