Update phpunit syntax to use attributes instead of annotations (#1210)

Author: spiralbot

composer.json

@@ -34,10 +34,10 @@
     ],
     "require": {
         "php": ">=8.1",
-        "spiral/core": "^3.15.1"
+        "spiral/core": "^3.16"
     },
     "require-dev": {
-        "spiral/boot": "^3.15.1",
+        "spiral/boot": "^3.16",
         "phpunit/phpunit": "^10.5.41",
         "mockery/mockery": "^1.6.12",
         "vimeo/psalm": "^6.0"
@@ -54,7 +54,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.15.x-dev"
+            "dev-master": "3.16.x-dev"
         }
     },
     "config": {