Update drg_material_icons gem to version 0.2.0 and gain more then 300 new Google material icons

The drg_material_icons gem provides Google Material icon web fonts and stylesheets as a Rails engine for use with the asset pipeline. Font files are loaded locally from your server so there is no fear for privacy. What is new:- Google decided to redesign icons as variable font and had changed their names to Material Symbols. Read more about Material Symbols here.- More than 300 new icons.- At last we get a database icon.