Delay SSL certificate generation

Delay LetsEncrypt SSL certificate generation until after Git repository
is pulled. This prevents `.well-known` directory creation from
preventing Git pulls due to the project root directory not being empty.

Author: martey

ansible/roles/web/tasks/main.yml

@@ -4,11 +4,11 @@
 - name: Import nginx tasks
   ansible.builtin.import_tasks: nginx.yml
 
-- name: Import letsencrypt tasks
-  ansible.builtin.import_tasks: letsencrypt.yml
-
 - name: Import django tasks
   ansible.builtin.import_tasks: django.yml
 
 - name: Import pretalx tasks
   ansible.builtin.import_tasks: pretalx.yml
+
+- name: Import letsencrypt tasks
+  ansible.builtin.import_tasks: letsencrypt.yml