Geoblock Registration 1.2.2

Minor bugfix to explicitly enforce admin permissions on admincp tools
updated icon
latest composer dependencies

This update only contains the latest composer dependencies, there has been no change to the addon code. Upgrading is optional.

• bugfix: don't try to uppercase a null iso_code
• php 8 compatibility fix: don't set a default parameter before non-default subsequent parameters
• slight re-arrange to order of code logic for EU checking - no point checking anything related to EU blocking if we don't have EU blocking enabled
• rename table to xf_geoblock_cache to adhere to resource standards
• addon now requires php 7+
• explicitly check for phar extension on install
• add legacy upgrade from XF 1.5 to Setup
• bugfix: wrong link to database update tool in test tool error message