Fix composer invocation to _not_ run as root.

Seems like Composer 2.4.2
(https://github.com/composer/composer/releases/tag/2.4.2) became more
strict, preventing the command from returning completely.

roles/internal/Islandora-Devops.crayfish/tasks/install.yml

@@ -65,7 +65,9 @@
   changed_when: true
   register: flex_package_info
   ignore_errors: true
-
+  become: true
+  become_user: "{{ crayfish_user }}"
+
 - name: "Delete Houdini vendor folder to update symfony/flex"
   file:
     state: absent