bump to 2.55.1
bump to 2.55.1

omridevk/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,FlixMaster/mwEmbed,FlixMaster/mwEmbed,kaltura/mwEmbed,FlixMaster/mwEmbed,omridevk/mwEmbed,omridevk/mwEmbed,alexmilk/mwEmbed,alexmilk/mwEmbed,omridevk/mwEmbed,alexmilk/mwEmbed,kaltura/mwEmbed,kaltura/mwEmbed,FlixMaster/mwEmbed