build: bump testbench 8

Author: yajra

.gitignore

@@ -2,3 +2,4 @@
 /coverage
 composer.phar
 composer.lock
+/.phpunit.cache/

composer.json

@@ -22,7 +22,7 @@
   },
   "require-dev": {
     "nunomaduro/larastan": "^2.4",
-    "orchestra/testbench": "^7.21"
+    "orchestra/testbench": "^8"
   },
   "autoload": {
     "psr-4": {

phpunit.xml

@@ -1,14 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         backupGlobals="false"
          bootstrap="vendor/autoload.php"
          colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
->
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
+         cacheDirectory=".phpunit.cache"
+         backupStaticProperties="false">
     <testsuites>
         <testsuite name="Package Test Suite">
             <directory suffix=".php">./tests/</directory>