fix cluster ci

Author: kai-init

tests/Integration/RedisProtocolTest.php

@@ -155,8 +155,11 @@ public function test_phpredis_raw_mode_is_applied_to_a_replacement_client(): voi
     {
         $connection = Redis::connection('normcache-test');
 
-        if (!$connection instanceof PhpRedisConnection) {
-            $this->markTestSkipped('PhpRedis only.');
+        if (
+            !$connection instanceof PhpRedisConnection
+            || !$connection->client() instanceof \Redis
+        ) {
+            $this->markTestSkipped('Standalone PhpRedis only.');
         }
 
         $store = app(RedisStore::class);