fix(observabillity): include otel logs

internal/service/mail.go

@@ -2,8 +2,8 @@ package service
 
 import (
 	"fmt"
+	"log/slog"
 	"net/smtp"
-	"spend-sparrow/internal/log"
 	"spend-sparrow/internal/types"
 )
 
@@ -47,9 +47,9 @@ func (m MailImpl) internalSendMail(to string, subject string, message string) {
 		subject,
 		message)
 
-	log.L.Info("sending mail", "to", to)
+	slog.Info("sending mail", "to", to)
 	err := smtp.SendMail(s.Host+":"+s.Port, auth, s.FromMail, []string{to}, []byte(msg))
 	if err != nil {
-		log.L.Error("Error sending mail", "err", err)
+		slog.Error("Error sending mail", "err", err)
 	}
 }