chore(deps): update dependency texthtml/doctest to ^0.3 (#57)

Co-authored-by: text-html-renovate[bot] <182508163+text-html-renovate[bot]@users.noreply.github.com>

Author: text-html-renovate[bot]

composer.json

@@ -35,7 +35,7 @@
         "vimeo/psalm": "^6.0",
         "symfony/finder": "^6.0|^7.0",
         "symfony/console": "^6.0|^7.0",
-        "texthtml/doctest": "^0.2"
+        "texthtml/doctest": "^0.3"
     },
     "config": {
         "allow-plugins": {