raise mysql version

Author: intoeetive

docs/installation/requirements.md

@@ -28,7 +28,7 @@ If you're not sure whether your server meets the minimum requirements, the serve
 
 ## The Bare Minimums
 
-If you are stuck in an older environment, ExpressionEngine _can_ run on PHP 7.2.5+ with 32M of memory, and MySQL 5.5.3+. PHP-FPM is also optional, but [tends to handily outperform mod_php](https://www.cloudways.com/blog/php-fpm-on-cloud/). That said,running older versions not only hurts performance—increasing the cost of your website—but also puts your site **at risk of security vulnerabilities**. The PHP Group stopped providing support for PHP 5.6 [on December 31, 2018](https://php.net/supported-versions.php). Oracle also ceased providing support for MySQL 5.5 at the same time.
+If you are stuck in an older environment, ExpressionEngine _can_ run on PHP 7.2.5+ with 32M of memory, and MySQL 5.6.4+. PHP-FPM is also optional, but [tends to handily outperform mod_php](https://www.cloudways.com/blog/php-fpm-on-cloud/). That said, running older versions not only hurts performance—increasing the cost of your website—but also puts your site **at risk of security vulnerabilities**. The PHP Group stopped providing support for PHP 5.6 [on December 31, 2018](https://php.net/supported-versions.php). Oracle also ceased providing support for MySQL 5.5 at the same time.
 
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