fix: use OCP\Server

Signed-off-by: John Molakvoæ <skjnldsv@users.noreply.github.com>

Author: skjnldsv

lib/private/AppFramework/Http/Request.php

@@ -660,7 +660,7 @@ public function getServerProtocol(): string {
 
 		if ($proto !== 'https' && $proto !== 'http') {
 			// log unrecognized value so admin has a chance to fix it
-			\OC::$server->get(LoggerInterface::class)->critical(
+			\OCP\Server::get(LoggerInterface::class)->critical(
 				'Server protocol is malformed [falling back to http] (check overwriteprotocol and/or X-Forwarded-Proto to remedy): ' . $proto,
 				['app' => 'core']
 			);