Fix for #26526

fix for sql query
replaced double quotes with single quotes.
Query should now also work for dbs with sql_mode including "ANSI" and "ANSI_QUOTES"

Signed-off-by: Tobias <scharft@hochschule-trier.de>

apps/settings/lib/SetupChecks/SupportedDatabase.php

@@ -63,7 +63,7 @@ public function check() {
 			case MySQL57Platform::class: # extends MySQLPlatform
 			case MariaDb1027Platform::class: # extends MySQLPlatform
 			case MySQLPlatform::class:
-				$result = $this->connection->prepare('SHOW VARIABLES LIKE "version";');
+				$result = $this->connection->prepare("SHOW VARIABLES LIKE 'version';");
 				$result->execute();
 				$row = $result->fetch();
 				$version = strtolower($row['Value']);