Dummy identifier need to pass for a guid (#7154)

Co-authored-by: Timshel <timshel@users.noreply.github.com>

src/sso.rs

@@ -17,7 +17,7 @@ use crate::{
     CONFIG,
 };
 
-pub static FAKE_SSO_IDENTIFIER: &str = "vaultwarden-dummy-oidc-identifier";
+pub static FAKE_SSO_IDENTIFIER: &str = "00000000-01DC-01DC-01DC-000000000000";
 
 static SSO_JWT_ISSUER: LazyLock<String> = LazyLock::new(|| format!("{}|sso", CONFIG.domain_origin()));