N°9319 increase php min. version to 8.2 (#887)

* Update minimum PHP version to 8.2
* Fix previous wrong resolution of merge conflict

lib/symfony/cache/Traits/Relay/Relay21Trait.php

@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Traits\Relay;
+
+if (version_compare(phpversion('relay'), '0.21.0', '>=')) {
+    /**
+     * @internal
+     */
+    trait Relay21Trait
+    {
+        public function gcra($key, $maxBurst, $requestsPerPeriod, $period, $numRequests = 0): \Relay\Relay|array|false
+        {
+            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->gcra(...\func_get_args());
+        }
+
+        public function hotkeys($subcmd, $args = null): \Relay\Relay|array|bool
+        {
+            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->hotkeys(...\func_get_args());
+        }
+    }
+} else {
+    /**
+     * @internal
+     */
+    trait Relay21Trait
+    {
+    }
+}