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

cmd/admin.go

@@ -113,11 +113,9 @@ func runRepoSyncReleases(ctx context.Context, _ *cli.Command) error {
 	log.Trace("Synchronizing repository releases (this may take a while)")
 	for page := 1; ; page++ {
 		repos, count, err := repo_model.SearchRepositoryByName(ctx, repo_model.SearchRepoOptions{
-			ListOptions: db.ListOptions{
-				PageSize: repo_model.RepositoryListDefaultPageSize,
-				Page:     page,
-			},
-			Private: true,
+			PageSize: repo_model.RepositoryListDefaultPageSize,
+			Page:     page,
+			Private:  true,
 		})
 		if err != nil {
 			return fmt.Errorf("SearchRepositoryByName: %w", err)