N°8834 - Add compatibility with PHP 8.4 (#819)

* N°8834 - Add compatibility with PHP 8.4

* Rollback of scssphp/scssphp version upgrade due to compilation error

lib/guzzlehttp/guzzle/src/Middleware.php

@@ -55,7 +55,7 @@ final class Middleware
      *
      * @return callable(callable): callable Returns a function that accepts the next handler.
      */
-    public static function httpErrors(BodySummarizerInterface $bodySummarizer = null): callable
+    public static function httpErrors(?BodySummarizerInterface $bodySummarizer = null): callable
     {
         return static function (callable $handler) use ($bodySummarizer): callable {
             return static function ($request, array $options) use ($handler, $bodySummarizer) {
@@ -132,7 +132,7 @@ final class Middleware
      *
      * @return callable Returns a function that accepts the next handler.
      */
-    public static function tap(callable $before = null, callable $after = null): callable
+    public static function tap(?callable $before = null, ?callable $after = null): callable
     {
         return static function (callable $handler) use ($before, $after): callable {
             return static function (RequestInterface $request, array $options) use ($handler, $before, $after) {
@@ -176,7 +176,7 @@ final class Middleware
      *
      * @return callable Returns a function that accepts the next handler.
      */
-    public static function retry(callable $decider, callable $delay = null): callable
+    public static function retry(callable $decider, ?callable $delay = null): callable
     {
         return static function (callable $handler) use ($decider, $delay): RetryMiddleware {
             return new RetryMiddleware($decider, $handler, $delay);
@@ -187,12 +187,12 @@ final class Middleware
      * Middleware that logs requests, responses, and errors using a message
      * formatter.
      *
-     * @phpstan-param \Psr\Log\LogLevel::* $logLevel  Level at which to log requests.
-     *
      * @param LoggerInterface                            $logger    Logs messages.
      * @param MessageFormatterInterface|MessageFormatter $formatter Formatter used to create message strings.
      * @param string                                     $logLevel  Level at which to log requests.
      *
+     * @phpstan-param \Psr\Log\LogLevel::* $logLevel Level at which to log requests.
+     *
      * @return callable Returns a function that accepts the next handler.
      */
     public static function log(LoggerInterface $logger, $formatter, string $logLevel = 'info'): callable