chore: update referral logic

src/modules/auth/providers/auth.service.ts

@@ -67,12 +67,7 @@ export class AuthService {
       const hashedPassword = await this.passwordService.hashPassword(completeRegistrationDto.password);
       const user = await this.usersService.createUser(completeRegistrationDto, hashedPassword, queryRunner);
 
-      if (referralCode) {
-        await this.referralsService.useReferralCode({
-          referralCode,
-          userId: user.id,
-        });
-      }
+      if (referralCode) await this.referralsService.useReferralCode({ referralCode, userId: user.id }, queryRunner);
 
       const tokens = await this.tokensService.generateTokens(user, queryRunner);