chore: remove antixss extension and rely on proper input escaping

composer.json

@@ -75,7 +75,6 @@
         "twig/intl-extra": "^3.7",
         "twig/string-extra": "^3.7",
         "twig/twig": "^2.12|^3.0",
-        "voku/anti-xss": "^4.1",
         "zenstruck/schedule-bundle": "^1.8"
     },
     "config": {