refactor: inject AgeConstraintParserRegistry into TravelParser

src/BusProNet/XmlParser/TravelParser.php

@@ -22,8 +22,6 @@ use Symfony\Component\DomCrawler\Crawler;
  */
 class TravelParser extends AbstractParser
 {
-    private AgeConstraintParserRegistry $ageConstraintRegistry;
-
     /**
      * @var array<string>
      */
@@ -31,9 +29,9 @@ class TravelParser extends AbstractParser
         Constants::PSEUDO_PRICE_ROOM_CODE,
     ];
 
-    public function __construct()
-    {
-        $this->ageConstraintRegistry = new AgeConstraintParserRegistry();
+    public function __construct(
+        private readonly AgeConstraintParserRegistry $ageConstraintRegistry = new AgeConstraintParserRegistry(),
+    ) {
     }
 
     /**