minor #6316 bump xdebug-handler (SpacePossum)

This PR was squashed before being merged into the master branch (closes #6316).

Discussion
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bump xdebug-handler

Closes #6310
see also composer/xdebug-handler#146 for details
thanks @pacproduct

Commits
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77d936a bump xdebug-handler

composer.json

@@ -18,7 +18,7 @@
         "ext-json": "*",
         "ext-tokenizer": "*",
         "composer/semver": "^3.2",
-        "composer/xdebug-handler": "^3.0",
+        "composer/xdebug-handler": "^3.0.3",
         "doctrine/annotations": "^1.13",
         "php-cs-fixer/diff": "^2.0",
         "symfony/console": "^5.4 || ^6.0",