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

routers/api/v1/api.go

@@ -795,7 +795,7 @@ func mustEnableIssuesOrPulls(ctx *context.APIContext) {
 }
 
 func mustEnableWiki(ctx *context.APIContext) {
-	if !(ctx.Repo.Permission.CanRead(unit.TypeWiki)) {
+	if !ctx.Repo.Permission.CanRead(unit.TypeWiki) {
 		ctx.APIErrorNotFound()
 		return
 	}

routers/api/v1/repo/issue_dependency.go

@@ -110,20 +110,16 @@ func GetIssueDependencies(ctx *context.APIContext) {
 		if !perm.CanReadIssuesOrPulls(blocker.Issue.IsPull) {
 			if !canWrite {
 				hiddenBlocker := &issues_model.DependencyInfo{
-					Issue: issues_model.Issue{
-						Title: "HIDDEN",
-					},
+					Title: "HIDDEN",
 				}
 				blocker = hiddenBlocker
 			} else {
 				confidentialBlocker := &issues_model.DependencyInfo{
-					Issue: issues_model.Issue{
-						RepoID:   blocker.Issue.RepoID,
-						Index:    blocker.Index,
-						Title:    blocker.Title,
-						IsClosed: blocker.IsClosed,
-						IsPull:   blocker.IsPull,
-					},
+					RepoID:   blocker.Issue.RepoID,
+					Index:    blocker.Index,
+					Title:    blocker.Title,
+					IsClosed: blocker.IsClosed,
+					IsPull:   blocker.IsPull,
 					Repository: repo_model.Repository{
 						ID:        blocker.Issue.Repo.ID,
 						Name:      blocker.Issue.Repo.Name,