Demoted the official Brazilian Portuguese translation to unofficial because of a no longer available maintainer.

whatsnew.htm

@@ -37,6 +37,8 @@ For conditions of distribution and use, see <a href="https://jrsoftware.org/file
   <li><i>Fix:</i> Calling DLL functions which return a 64-bit integer now gives correct result values.</li>
 </ul>
 
+<p>Demoted the official <a href="https://raw.github.com/jrsoftware/issrc/main/Files/Languages/Unofficial/BrazilianPortuguese.isl">Brazilian Portuguese</a> translation to unofficial because of a no longer available maintainer. To send an update yourself, <a href="https://github.com/jrsoftware/issrc/commit/9e03ea4de5b8639937d2c4024ec8582a7e63b048">view the differences in Default.isl</a> for what needs updating and use <a href="https://jrsoftware.org/files/istrans/send2.php">this form</a> to send updates (or use <a href="https://github.com/jrsoftware/issrc" target="_blank">GitHub</a>). See the <a href="https://jrsoftware.org/files/istrans/">Inno Setup Translations</a> page for more information.</li>
+
 <p><a name="6.1.0"></a><span class="ver">6.1.0-beta </span><span class="date">(2020-09-13)</span></p>
 <p><span class="head2">Per-user fonts</span></p>
 <p>Per-user fonts are now supported if Setup is running on Windows 10 Version 1803 and later:</p>