php8 support

tests/Extra/Fields/UnicodeCommentExtraFieldTest.php

@@ -1,5 +1,14 @@
 <?php
 
+declare(strict_types=1);
+
+/*
+ * This file is part of the nelexa/zip package.
+ * (c) Ne-Lexa <https://github.com/Ne-Lexa/php-zip>
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace PhpZip\Tests\Extra\Fields;
 
 use PhpZip\Model\Extra\Fields\UnicodeCommentExtraField;
@@ -19,10 +28,7 @@ final class UnicodeCommentExtraFieldTest extends AbstractUnicodeExtraFieldTest
         return UnicodeCommentExtraField::class;
     }
 
-    /**
-     * @return array
-     */
-    public function provideExtraField()
+    public function provideExtraField(): array
     {
         return [
             [