Update scrivo/highlight.php (#162)

Author: OskarStark

composer.json

@@ -18,7 +18,7 @@
         "ext-json": "*",
         "ext-curl": "*",
         "doctrine/rst-parser": "^0.5",
-        "scrivo/highlight.php": "^9.12.0",
+        "scrivo/highlight.php": "^9.18.1",
         "symfony/filesystem": "^5.2 || ^6.0",
         "symfony/finder": "^5.2 || ^6.0",
         "symfony/dom-crawler": "^5.2 || ^6.0",