[FIX] .copier-answers.yml

Author: OCA-git-bot

.copier-answers.yml

@@ -16,7 +16,7 @@ org_name: Odoo Community Association (OCA)
 org_slug: OCA
 rebel_module_groups:
 - auth_saml
-repo_description: null
+repo_description: ""
 repo_name: server-auth
 repo_slug: server-auth
 repo_website: https://github.com/OCA/server-auth