auth_oidc: log user_info content at DEBUG level (#53929)

src/authentic2_auth_oidc/backends.py

@@ -188,6 +188,8 @@ class OIDCBackend(ModelBackend):
                     user_info = response.json()
                 except ValueError as e:
                     logger.warning('auth_oidc: bad JSON in user info response, %s (%r)', e, response.content)
+                else:
+                    logger.debug('auth_oidc: user_info content %s', user_info)
 
         # check for required claims
         for claim_mapping in provider.claim_mappings.all():