chore(deps): update dependency phpunit/phpunit to v13 (#25)

Author: renovate-bot

google-analytics-admin/composer.json

@@ -6,7 +6,7 @@
     "require-dev": {
         "google/cloud-tools": "dev-main",
         "squizlabs/php_codesniffer": "^4.0",
-        "phpunit/phpunit": "^10.0",
+        "phpunit/phpunit": "^13.0",
         "friendsofphp/php-cs-fixer": "^3.46"
     }
 }

google-analytics-data/composer.json

@@ -6,7 +6,7 @@
     "require-dev": {
         "google/cloud-tools": "dev-main",
         "squizlabs/php_codesniffer": "^4.0",
-        "phpunit/phpunit": "^10.0",
+        "phpunit/phpunit": "^13.0",
         "friendsofphp/php-cs-fixer": "^3.46"
     }
 }