Log Message:
www/ruby-jekyll-seo-tag: update to 2.8.0

2.8.0 (2022-02-04)

Minor Enhancements

* Allow to set type for author (#427)
* Allow setting author.url (#453)
* Implement Facebook domain verification (#455)
* Add og:image:alt and twitter:image:alt (#438)
* Sort JSON-LD data by key (#458)

Bug Fixes

* Set the default og:type to 'website' (#391)
* Template: Remove double new line (#454)

Development Fixes

* Fix typo in source code comment (#449)
* Set up Continuous Integration via GH Actions (#450)
* Bump RuboCop to v1.18.x (#452)
* Add workflow to release gem via GH Actions