PHP 8.1: silence the deprecation notices about missing return types

composer.json

@@ -20,7 +20,7 @@
     "require-dev": {
         "nette/tester": "^1.3 || ^2.0",
         "php-parallel-lint/php-console-highlighter": "~0.3",
-        "squizlabs/php_codesniffer": "^3.5"
+        "squizlabs/php_codesniffer": "^3.6"
     },
     "suggest": {
         "php-parallel-lint/php-console-highlighter": "Highlight syntax in code snippet"

src/Error.php

@@ -1,6 +1,8 @@
 <?php
 namespace JakubOnderka\PhpParallelLint;
 
+use ReturnTypeWillChange;
+
 class Error implements \JsonSerializable
 {
     /** @var string */
@@ -57,6 +59,7 @@ public function getShortFilePath()
      * @return mixed data which can be serialized by <b>json_encode</b>,
      * which is a value of any type other than a resource.
      */
+    #[ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return array(
@@ -87,6 +90,7 @@ class Blame implements \JsonSerializable
      * @return mixed data which can be serialized by <b>json_encode</b>,
      * which is a value of any type other than a resource.
      */
+    #[ReturnTypeWillChange]
     function jsonSerialize()
     {
         return array(

src/Manager.php

@@ -4,6 +4,7 @@
 use JakubOnderka\PhpParallelLint\Contracts\SyntaxErrorCallback;
 use JakubOnderka\PhpParallelLint\Process\GitBlameProcess;
 use JakubOnderka\PhpParallelLint\Process\PhpExecutable;
+use ReturnTypeWillChange;
 
 class Manager
 {
@@ -226,6 +227,7 @@ public function __construct(\RecursiveDirectoryIterator $iterator, array $exclud
      * @link http://php.net/manual/en/filteriterator.accept.php
      * @return bool true if the current element is acceptable, otherwise false.
      */
+    #[ReturnTypeWillChange]
     public function accept()
     {
         $current = $this->current()->getPathname();
@@ -245,6 +247,7 @@ public function accept()
      * @link http://php.net/manual/en/recursivefilteriterator.haschildren.php
      * @return bool true if the inner iterator has children, otherwise false
      */
+    #[ReturnTypeWillChange]
     public function hasChildren()
     {
         return $this->iterator->hasChildren();
@@ -257,6 +260,7 @@ public function hasChildren()
      * @link http://php.net/manual/en/recursivefilteriterator.getchildren.php
      * @return \RecursiveFilterIterator containing the inner iterator's children.
      */
+    #[ReturnTypeWillChange]
     public function getChildren()
     {
         return new self($this->iterator->getChildren(), $this->excluded);

src/Result.php

@@ -1,6 +1,8 @@
 <?php
 namespace JakubOnderka\PhpParallelLint;
 
+use ReturnTypeWillChange;
+
 class Result implements \JsonSerializable
 {
     /** @var Error[] */
@@ -154,6 +156,7 @@ public function getTestTime()
      * @return mixed data which can be serialized by <b>json_encode</b>,
      * which is a value of any type other than a resource.
      */
+    #[ReturnTypeWillChange]
     function jsonSerialize()
     {
         return array(

src/exceptions.php

@@ -1,8 +1,11 @@
 <?php
 namespace JakubOnderka\PhpParallelLint;
 
+use ReturnTypeWillChange;
+
 class Exception extends \Exception implements \JsonSerializable
 {
+    #[ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return array(