Merge pull request #122 from creative-commoners/pulls/4/phpunit11

DEP Use PHPUnit 11

Author: GuySartorelli

composer.json

@@ -19,7 +19,7 @@
         "silverstripe/admin": "^3"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^11.3",
         "squizlabs/php_codesniffer": "^3",
         "silverstripe/standards": "^1",
         "phpstan/extension-installer": "^1.3",