Bump api-clients/test-utilities from 5.3.0 to 5.4.0

Bumps [api-clients/test-utilities](https://github.com/php-api-clients/test-utilities) from 5.3.0 to 5.4.0.
- [Release notes](https://github.com/php-api-clients/test-utilities/releases)
- [Commits](php-api-clients/test-utilities@5.3.0...5.4.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

composer.json

@@ -15,7 +15,7 @@
     "wyrihaximus/string-get-in": "^1.0"
   },
   "require-dev": {
-    "api-clients/test-utilities": "^5.1.0",
+    "api-clients/test-utilities": "^5.4.0",
     "guzzlehttp/psr7": "^1.3"
   },
   "autoload": {