Update from upstream wg/aria/group.json

Author: w3cbot

wg/aria/group.json

@@ -46,7 +46,7 @@
  },
  "type": "working group",
  "start-date": "2015-10-22",
- "end-date": "2027-01-01",
+ "end-date": "2027-07-01",
  "@context": "https://w3c.github.io/groups/contexts/group.jsonld",
  "tr-publisher": true,
  "group-type": "wg",