Update phpunit version

Author: juchi

composer.json

@@ -10,11 +10,11 @@
         }
     ],
     "require": {
-        "php": "^7.4|^8.0",
-        "symfony/framework-bundle": "^4.4|^5.0|^6.0"
+        "php": "^7.4 || ^8.0",
+        "symfony/framework-bundle": "^4.4 || ^5.0 || ^6.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.5"
+        "phpunit/phpunit": "^9.6"
     },
     "autoload": {
         "psr-4": { "Sherlockode\\ConfigurationBundle\\": "" }

phpunit.xml.dist

@@ -1,24 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="./vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage>
+    <include>
+      <directory>./</directory>
+    </include>
+    <exclude>
+      <directory>./Resources</directory>
+      <directory>./Tests</directory>
+      <directory>./vendor</directory>
+    </exclude>
+  </coverage>
 
-<phpunit bootstrap="./vendor/autoload.php">
-    <php>
-        <ini name="error_reporting" value="-1" />
-    </php>
+  <php>
+    <ini name="error_reporting" value="-1"/>
+  </php>
 
-    <testsuites>
-        <testsuite name="Sherlockode configuration bundle test suite">
-            <directory suffix="Test.php">./Tests</directory>
-        </testsuite>
-    </testsuites>
+  <testsuites>
+    <testsuite name="Sherlockode configuration bundle test suite">
+      <directory suffix="Test.php">./Tests</directory>
+    </testsuite>
+  </testsuites>
 
-    <filter>
-        <whitelist>
-            <directory>./</directory>
-            <exclude>
-                <directory>./Resources</directory>
-                <directory>./Tests</directory>
-                <directory>./vendor</directory>
-            </exclude>
-        </whitelist>
-    </filter>
 </phpunit>