Upgraded to go1.22 + replaced log with slog

api/api.go

@@ -1,11 +1,10 @@
 package api
 
 import (
-	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"holiday-api/domain/holiday"
-	"log"
+	"log/slog"
 	"net/http"
 	"strconv"
 	"time"
@@ -339,7 +338,7 @@ func render(c *gin.Context, status int, response any, contentType *string) {
 }
 
 func Abort(c *gin.Context, err error, statusCode int, message string) {
-	log.Output(1, fmt.Sprintf("error | %s | err: %v", message, errorMessage(err)))
+	slog.Error(message, slog.String("err", errorMessage(err)))
 	c.AbortWithError(statusCode, err)
 }