Log Message:
www/ruby-rack-cache: update to 1.16.0

1.16.0 (2024-03-01)

What's Changed

* Typo in meta_store_test.rb test description [ci skip] by @olleolleolle in
  #23

* Purge cache_key if response headers do not include content digest by
  @evman182 in #22

* Remove memcached gem. by @ioquatix in #24

New Contributors

* @evman182 made their first contribution in #22