refactor: Git is needed for ynh install

tasks/main.yml

@@ -2,6 +2,7 @@
 - name: Install requirements
   ansible.builtin.apt:
     name:
+      - git
       - dialog
     state: present
 
@@ -25,8 +26,7 @@
     yunohost tools postinstall \
       --domain {{ ynh_main_domain }} \
       --password {{ ynh_admin_password }} \
-      {% if ynh_ignore_dyndns_server == True %} --ignore-dyndns {% endif %}
-      "
+      {% if ynh_ignore_dyndns_server == True %} --ignore-dyndns {% endif %}"
   when: ynh_file_install.stat.exists == False
 
 - name: Create extra domains