fix: ignore unexported sync.Mutex field when comparing portForwardEntry

Author: alphanota

pkg/skaffold/kubernetes/portforward/resource_forwarder_test.go

@@ -25,6 +25,7 @@ import (
 	"time"
 
 	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -218,7 +219,7 @@ func TestGetCurrentEntryFunc(t *testing.T) {
 
 			expectedEntry := test.expected
 			expectedEntry.resource = test.resource
-			t.CheckDeepEqual(expectedEntry, actualEntry, cmp.AllowUnexported(portForwardEntry{}, sync.Mutex{}))
+			t.CheckDeepEqual(expectedEntry, actualEntry, cmp.AllowUnexported(portForwardEntry{}), cmpopts.IgnoreUnexported(sync.Mutex{}))
 		})
 	}
 }