Refs #695 - Fix deprecation for dynamic property (#697)

See slevomat/coding-standard@b71f8d7
The property we set has been renamed since V7 of slevomat coding standard

Author: Jibbarth

src/Application/DefaultPreset.php

@@ -42,7 +42,7 @@ public static function get(Composer $composer): array
                     'linesCountBetweenDifferentAnnotationsTypes' => 1,
                 ],
                 DeclareStrictTypesSniff::class => [
-                    'newlinesCountBeforeDeclare' => 2,
+                    'linesCountBeforeDeclare' => 1,
                     'spacesCountAroundEqualsSign' => 0,
                 ],
                 UnusedUsesSniff::class => [