Use full path when importing SSL setup tasks

This is an attempt to make ansible-lint happy.

roles/matrix-nginx-proxy/tasks/ssl/main.yml

@@ -29,8 +29,8 @@
 
 # Method specific tasks follow
 
-- ansible.builtin.import_tasks: tasks/ssl/setup_ssl_lets_encrypt.yml
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/ssl/setup_ssl_lets_encrypt.yml"
 
-- ansible.builtin.import_tasks: tasks/ssl/setup_ssl_self_signed.yml
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/ssl/setup_ssl_self_signed.yml"
 
-- ansible.builtin.import_tasks: tasks/ssl/setup_ssl_manually_managed.yml
+- ansible.builtin.import_tasks: "{{ role_path }}/tasks/ssl/setup_ssl_manually_managed.yml"