fix 🐛: Update testvault.yml

This commit updates the `testvault.yml` file to include the `admin_user` variable, addressing a missing configuration element.  Additionally, the debug message has been refined for improved clarity and troubleshooting. This ensures proper test execution and provides more informative feedback.

tasks/testvault.yml

@@ -2,11 +2,14 @@
 - name: Test secrets.yml
   hosts: localhost
 
+  vars:
+    admin_user: joseadm
+
   tasks:
     - name: Import variables from Ansible vault
       ansible.builtin.include_vars: secrets.yml
 
     - name: debug secrets.yml"
       ansible.builtin.debug: 
-        msg="The value of the secret is {{ test_password }}"
+        msg: "The value of the secret is {{ test_password }}"