I recently upgraded an instance of mediawiki and as always I’m amazed at how easy it is to upgrade the product. Simple upgrade is as follows (backup files and database first):

wget https://releases.wikimedia.org/mediawiki/1.46/mediawiki-1.46.0.tar.gz
tar xvf mediawiki-1.46.0.tar.gz
cp wiki/LocalSettings.php mediawiki-1.46.0/LocalSettings.php
cp wiki/images/* mediawiki-1.46.0/images/
chown -R owner:group mediawiki-1.46.0
rm -rf wiki/
mv mediawiki-1.46.0 wiki
rm -f mediawiki-1.46.0.tar.gz
cd wiki/maintenance/
php84 update.php

Based on instructions here: https://www.mediawiki.org/wiki/Manual:Upgrading