fix: #8392, clear group member cache when group is renamed

src/groups/update.js

@@ -8,6 +8,7 @@ const db = require('../database');
 const user = require('../user');
 const batch = require('../batch');
 const meta = require('../meta');
+const cache = require('../cache);
 
 
 module.exports = function (Groups) {
@@ -180,7 +181,8 @@ module.exports = function (Groups) {
 		const allGroups = await db.getSortedSetRange('groups:createtime', 0, -1);
 		const keys = allGroups.map(group => 'group:' + group + ':members');
 		await renameGroupsMember(keys, oldName, newName);
-
+		cache.del(keys);
+		
 		await db.rename('group:' + oldName, 'group:' + newName);
 		await db.rename('group:' + oldName + ':members', 'group:' + newName + ':members');
 		await db.rename('group:' + oldName + ':owners', 'group:' + newName + ':owners');