In WordPress, allow uploading of svgs through the Admin Panel to the media library if the current user is an administrator.

upload_svg_if_admin.php

<?php
	function enable_svg_upload_if_admin($mimes) {

		$current_user_roles = wp_get_current_user()->roles;		// get roles of current user

		// check if user is administrator and user is in the admin panel (not in the frontend)
		if(in_array('administrator', $current_user_roles) && is_admin()) {	
			$mimes['svg'] = 'image/svg+xml';					
			return $mimes;						// if administrator, enable svg upload
		}

		return $mimes;							// if not admin, keep default upload types
	}
	add_filter('upload_mimes', 'enable_svg_upload_if_admin');		// tell WordPress about enable_svg_upload_if_admin