Fixed Hero header

■Fixed a change in Chrome’s specification that prevented YouTube and MP4 videos from autoplaying.
※Due to a change in Chrome’s autoplay policy, audio must now be muted in order to autoplay.

The following are the files that have been modified for this update.
【Corrected files】
・assets/js/front-page.js
・assets/js/front-page.min.js
・template-parts/hero-header.php
・style.css