Since your hosting provider is using a packaged version distributed by cPanel, you can either download the official phpMyAdmin source and install it manually out side of the existing phpMyAdmin installation, or you can wait for cPanel to provide an update.
As an aside, phpMyAdmin provides a specific way for other packages that include phpMyAdmin (like cPanel in this case) to suppress that warning, and it's probably an oversight that they don't. In the meantime, you could also turn off the warning by editing your config.inc.php and adding the line $cfg['VersionCheck'] = false;