Remove the unique constraint on the 'cif' field in the debitures table and refactor the `UniqueCifExceptZero` validation rule to handle the uniqueness check more robustly. Also, add an unused import statement for `UniqueExcept` in `DebitureRequest`.
penambahan default cif 0x10 dan di buat mandatory update field npwp input harus minimal 15 dan maksimal 16 digit penambahan rules