update minium requirement

gutenberg.php

@@ -4,7 +4,7 @@
  * Plugin URI: https://github.com/bph/gutenberg
  * Description: Zip from trunk (the default branch) of WordPress Gutenberg GitHub repo: Gutenberg This is the development plugin for the new block editor in core. If you have trouble seeing updates, go to <em>Git Updater > Settings</em>  and use the button <em>Refresh Cache</em>. Ping @bph on WPSlack for questions. Or <a href="https://github.com/bph/gutenberg/discussions/new">post on the Discussion board</a>.
 
- * Requires at least: 6.1
+ * Requires at least: 6.2
  * Requires PHP: 7.0
  * Version: 16.7.20230904
  * Author: Gutenberg Team and Birgit Pauli-Haack (Gutenberg Times)