Update to use PHPUnit 10 syntax (#1163)

Author: spiralbot

composer.json

@@ -34,10 +34,10 @@
     ],
     "require": {
         "php": ">=8.1",
-        "spiral/core": "^3.14.6"
+        "spiral/core": "^3.15"
     },
     "require-dev": {
-        "spiral/boot": "^3.14.6",
+        "spiral/boot": "^3.15",
         "phpunit/phpunit": "^10.1",
         "mockery/mockery": "^1.5",
         "vimeo/psalm": "^5.9"