update packages and add valign

lisp/org/ox-org.el

@@ -1,6 +1,6 @@
 ;;; ox-org.el --- Org Backend for Org Export Engine -*- lexical-binding: t; -*-
 
-;; Copyright (C) 2013-2025 Free Software Foundation, Inc.
+;; Copyright (C) 2013-2026 Free Software Foundation, Inc.
 
 ;; Author: Nicolas Goaziou <n.goaziou@gmail.com>
 ;; Keywords: org, text
@@ -337,10 +337,13 @@ is the property list for the given project.  PUB-DIR is the
 publishing directory.
 
 Return output file name."
+  (require 'ox-publish)
+  (declare-function org-publish-org-to "ox-publish" (backend filename extension plist &optional pub-dir))
   (org-publish-org-to 'org filename ".org" plist pub-dir)
   (when (plist-get plist :htmlized-source)
     (org-require-package 'htmlize)
     (require 'ox-html)
+    (defvar org-html-extension) ; defined in ox-html.el
     (let* ((org-inhibit-startup t)
 	   (htmlize-output-type 'css)
 	   (html-ext (concat "." (or (plist-get plist :html-extension)