Allow WordPress admin to upload SVG media file

wp-codesnippet-enable-svg-upload.php

<?php
//below code snippet is to be added to WordPress theme functions.php file

//enable SVG upload
function tt_enable_svg_upload( $mimes ) {
  //Only admin can upload SVG file
  if ( !current_user_can( 'administrator' ) ) {
    return $mimes;
  }
  
  $mimes['svg']  = 'image/svg+xml';
  $mimes['svgz'] = 'image/svg+xml';
  
  return $mimes;
}

add_filter('upload_mimes', 'tt_enable_svg_upload');