chore: update golangci-lint to v2.13.0

Migrate the deprecated gofumpt `extra-rules` to `extra.group-params`, as
the alias now also enables the new `clothe-returns` and `balance-calls`
rules. Disable SA4023, which hangs on go 1.27, see
https://github.com/golangci/golangci-lint/issues/6732.

Apply the resulting modernize fixes, mostly flattening embedded struct
literals and switching errors.As to errors.AsType.

Assisted-by: Claude:Opus 5

models/webhook/hooktask.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"errors"
 	"time"
+	"uuid"
 
 	"gitea.dev/models/db"
 	"gitea.dev/modules/json"
@@ -15,7 +16,6 @@ import (
 	"gitea.dev/modules/timeutil"
 	webhook_module "gitea.dev/modules/webhook"
 
-	"uuid"
 	"xorm.io/builder"
 )
 

models/webhook/webhook_test.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"testing"
 	"time"
+	"uuid"
 
 	"gitea.dev/models/db"
 	"gitea.dev/models/unittest"
@@ -17,7 +18,6 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"uuid"
 	"xorm.io/builder"
 )