Allow phpunit 10

Author: Steve Kirkland

composer.json

@@ -18,7 +18,7 @@
     "require-dev": {
         "guzzlehttp/psr7": "^1.3|^2.0",
         "mtdowling/burgomaster": "dev-master#72151eddf5f0cf101502b94bf5031f9c53501a04",
-        "phpunit/phpunit": "^4.8.36|^7.5.15|^9.3.10",
+        "phpunit/phpunit": "^4.8.36|^7.5.15|^9.3.10|^10.5.46",
         "php-mock/php-mock-phpunit": "^1.1|^2.1",
         "sebastian/version": ">=1.0.3"
     },