test: Add JSON logging handler to recur test

sync/service/recur_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"log/slog"
+	"os"
 	"testing"
 	"time"
 
@@ -13,7 +14,7 @@ func TestRecur(t *testing.T) {
 
 	now := time.Date(2024, 1, 1, 10, 0, 0, 0, time.UTC)
 	mem := NewMemory()
-	rec := NewRecur(mem, mem, time.Second, slog.New())
+	rec := NewRecur(mem, mem, time.Second, slog.New(slog.NewJSONHandler(os.Stdout, nil)))
 
 	// Create a recurring item
 	recur := &item.Recur{