improved logging in callbacks

api/edge/callbacks/internal/subscriptions/module.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/tech/sendico/edge/callbacks/internal/model"
 	"github.com/tech/sendico/edge/callbacks/internal/storage"
+	"github.com/tech/sendico/pkg/mlogger"
 	"go.mongodb.org/mongo-driver/v2/bson"
 )
 
@@ -16,4 +17,5 @@ type Resolver interface {
 // Dependencies defines subscriptions resolver dependencies.
 type Dependencies struct {
 	EndpointRepo storage.EndpointRepo
+	Logger       mlogger.Logger
 }