Update auto-publish workflow to Ubuntu latest

SHA: a24aead
Reason: push, by anssiko

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: reillyeon

index.html

@@ -5,10 +5,10 @@
   <title>Proofreader API</title>
   <meta content="UD" name="w3c-status">
   <link href="https://www.w3.org/StyleSheets/TR/2021/W3C-UD" rel="stylesheet">
-  <meta content="Bikeshed version 1453201ca, updated Wed Nov 5 21:01:59 2025 +0000" name="generator">
+  <meta content="Bikeshed version ac6b08744, updated Wed Dec 10 23:44:49 2025 +0000" name="generator">
   <link href="https://explainers-by-googlers.github.io/proofreader-api" rel="canonical">
   <link href="https://www.w3.org/2008/site/images/favicon.ico" rel="icon">
-  <meta content="6179385d29e4294a4ea4f6a702d0134806e07572" name="revision">
+  <meta content="a24aead25003d363d12136cf835ccf954de77398" name="revision">
   <meta content="dark light" name="color-scheme">
   <link href="https://www.w3.org/StyleSheets/TR/2021/dark.css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css">
 <style>/* Boilerplate: style-autolinks */
@@ -417,7 +417,7 @@
 </p>
    <h1 class="no-ref p-name" id="title">Proofreader API</h1>
    <p id="w3c-state"><a href="https://www.w3.org/standards/types/#UD">Unofficial Proposal Draft</a>,
-    <time class="dt-updated" datetime="2025-11-06">6 November 2025</time></p>
+    <time class="dt-updated" datetime="2025-12-12">12 December 2025</time></p>
    <details open>
     <summary>More details about this document</summary>
     <div data-fill-with="spec-metadata">
@@ -447,7 +447,7 @@ <h2 class="heading no-num no-ref no-toc settled" id="sotd"><span class="content"
   <div data-fill-with="at-risk"></div>
   <nav data-fill-with="table-of-contents" id="toc">
    <h2 class="no-num no-ref no-toc" id="contents">Table of Contents</h2>
-   <ol class="toc" role="directory">
+   <ol class="toc">
     <li><a href="#intro"><span class="secno">1</span> <span class="content">Introduction</span></a>
     <li>
      <a href="#w3c-conformance"><span class="secno"></span> <span class="content">Conformance</span></a>