Add "sslrootcert" to knownKeys in PgsqlDriver (#289)

* Add "sslrootcert" to knownKeys in PgsqlDriver

* Add SSLCert param

Author: jakubenglicky

src/Drivers/Pgsql/PgsqlDriver.php

@@ -77,6 +77,8 @@ public function connect(array $params, ILogger $logger): void
 			'connect_timeout',
 			'options',
 			'sslmode',
+			'sslrootcert',
+			'sslcert',
 			'service',
 		];