updateAffiliateBankPayment: Use value of donation's updatedAt field

When passing undefined to the query, prisma still updates the updatedAt field, as it uses default property

apps/api/src/donations/donations.service.ts

@@ -597,7 +597,7 @@ export class DonationsService {
         this.vaultService.incrementVaultAmount(donationDto.targetVaultId, donationDto.amount, tx),
         tx.donation.update({
           where: { id: donationDto.id },
-          data: { status: DonationStatus.succeeded, updatedAt: undefined },
+          data: { status: DonationStatus.succeeded, updatedAt: donationDto.updatedAt },
         }),
       ])
     })