🚚 roles: timezone: Override with galaxy name

The repository name differs from the galaxy name.  Although not strictly
necessary, makes origin of role more clear in code and would allow
easier switching between galaxy, and git.  Using the namespaced name
makes it clear it's an external role.  Same name as in role
documentation now.  No change in actual role or version of role.

Link: https://docs.ansible.com/ansible/latest/galaxy/user_guide.html#installing-multiple-roles-from-a-file

group-all.yml

@@ -8,7 +8,7 @@
     ansible_python_interpreter: /usr/bin/python3
 
   roles:
-    - role: ansible.timezone
+    - role: adriagalin.timezone
       vars:
         ag_timezone: "{{ timezone }}"
     - role: users

requirements.yml

@@ -2,7 +2,8 @@
 roles:
   - src: hifis.unattended_upgrades
     version: v3.2.1
-  - src: git+https://github.com/adriagalin/ansible.timezone.git
+  - name: adriagalin.timezone
+    src: git+https://github.com/adriagalin/ansible.timezone.git
     version: 4.0.0
   - src: git+https://github.com/24367dfa/ansible-role-dehydrated.git
     version: 2.0.0