OpenCart and Theme Upgrade

We need help upgrading our website to ensure compatibility with the recent PHP 8.3 server update. The work includes upgrading OpenCart from version 3.0.3.3 to 3.0.5.x and updating the Journal 3 theme from version 3.0.46 to 3.1.9+ or 3.2+. The goal is to resolve compatibility issues and ensure the site runs smoothly after the update. Budget is USD 200.00.