Upgrade 1-11.38

vendor/symfony/serializer/Mapping/Factory/CacheClassMetadataFactory.php

@@ -44,8 +44,7 @@ class CacheClassMetadataFactory implements ClassMetadataFactoryInterface
     public function getMetadataFor($value)
     {
         $class = $this->getClass($value);
-        // Key cannot contain backslashes according to PSR-6
-        $key = strtr($class, '\\', '_');
+        $key = rawurlencode(strtr($class, '\\', '_'));
 
         $item = $this->cacheItemPool->getItem($key);
         if ($item->isHit()) {