Bump stable to 5.6.0.

Author: boonebgorges

readme.txt

@@ -4,7 +4,7 @@ Donate link:
 Tags: aggregate, aggregation, aggregator, atom, attribution, circulate, collect, community, content curation, curate, curation, curation tool, discuss, distribute, editorial, feed, network, news, opml, OPML, read, reader, reblog, reblogging, republish, review, RSS, rss, share, syndicate, syndication, workflow
 Requires at least: 5.7
 Tested up to: 6.4
-Stable tag: 5.4.0
+Stable tag: 5.6.0
 License: AGPLv3
 License URI: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html