Support legacy environments with PHP 5.6.20+

Author: lewart3

utils/wp-cli-updatedeb.sh

@@ -31,7 +31,7 @@ Architecture: all
 Maintainer: Alain Schlesser <[email protected]>
 Section: php
 Priority: optional
-Depends: php-cli, php-mysqlnd, default-mysql-client | virtual-mysql-client
+Depends: php-cli | php5-cli (>= 5.6), php-mysql | php-mysqlnd | php5-mysql, default-mysql-client | virtual-mysql-client
 Homepage: https://wp-cli.org/
 Description: wp-cli is a set of command-line tools for managing
  WordPress installations. You can update plugins, set up multisite