Add changelog entry for Playwright migration and Docker base image update

@@ -27,6 +27,18 @@  <div class="row">    <div class="col-lg-6 offset-lg-3 col-sm-8 offset-sm-2 col-xs-12 offset-xs-0">      <div class="row border-bottom py-2">        <div class="col-3">          <span class="badge bg-success">2025-10-04</span>        </div>        <div class="col-9">          <ul class="mb-0">            <li>Swap browser automation to Playwright with the bundled Chromium runtime</li>            <li>Switch Docker base image to Ubuntu 24.04 LTS</li>          </ul>        </div>      </div>      <div class="row border-bottom py-2">        <div class="col-3">          <span class="badge bg-success">2022-07-26</span>