Bump api-clients/test-utilities from 3.0.1 to 4.3.0

Bumps [api-clients/test-utilities](https://github.com/php-api-clients/test-utilities) from 3.0.1 to 4.3.0.
- [Release notes](https://github.com/php-api-clients/test-utilities/releases)
- [Commits](php-api-clients/test-utilities@3.0.1...4.3.0)

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

Author: dependabot-support

composer.json

@@ -17,7 +17,7 @@
     "api-clients/middleware": "^4.0"
   },
   "require-dev": {
-    "api-clients/test-utilities": "^3.0.1",
+    "api-clients/test-utilities": "^4.3.0",
     "ringcentral/psr7": "^1.2"
   },
   "autoload": {