Merge pull request #11563 from theodorejb/replace-sleep

Replace deprecated __sleep method with __serialize

Author: danog

src/Psalm/Internal/Fork/Pool.php

@@ -42,7 +42,7 @@
 final class Pool
 {
     private readonly WorkerPool $pool;
-    public function __sleep(): array
+    public function __serialize(): array
     {
         return [];
     }