Merge pull request #20 from php-api-clients/dependabot/composer/api-clients/test-utilities-5.4.0

Author: dependabot[bot]

composer.json

@@ -19,7 +19,7 @@
     "wyrihaximus/ticking-promise": "^1.6"
   },
   "require-dev": {
-    "api-clients/test-utilities": "^5.1.0"
+    "api-clients/test-utilities": "^5.4.0"
   },
   "autoload": {
     "psr-4": {