Prepare the 3.27.1 release

CHANGELOG

@@ -1,4 +1,4 @@
-# 3.27.1 (2026-XX-XX)
+# 3.27.1 (2026-05-30)
 
  * Fix array access with a `Stringable` key to coerce the key to string consistently instead of throwing in the optimized path
  * Fix sandbox replacing `IteratorAggregate` arguments (e.g. Symfony's `FormView`) by a plain array

src/Environment.php

@@ -43,12 +43,12 @@ use Twig\TokenParser\TokenParserInterface;
  */
 class Environment
 {
-    public const VERSION = '3.27.1-DEV';
+    public const VERSION = '3.27.1';
     public const VERSION_ID = 32701;
     public const MAJOR_VERSION = 3;
     public const MINOR_VERSION = 27;
     public const RELEASE_VERSION = 1;
-    public const EXTRA_VERSION = 'DEV';
+    public const EXTRA_VERSION = '';
 
     private $charset;
     private $loader;