Merge pull request #53310 from nextcloud/ci/sso

[stable29] ci: install correct version of user_saml for Nextcloud 29

Author: AndyScherzinger

.github/workflows/files-external-smb-kerberos.yml

@@ -50,6 +50,8 @@ jobs:
         with:
           repository: nextcloud/user_saml
           path: apps/user_saml
+          # Latest version for Nextcloud 29
+          ref: stable-6
 
       - name: Install user_saml
         run: |