website/docs: update 2021.8 release notes

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

website/docs/releases/v2021.8.md

@@ -15,7 +15,19 @@ slug: "2021.8"
 
 ## Minor changes
 
-- api: Add filters to resources which were missing them
+ - admin: add API to show embedded outpost status, add notice when its not configured properly
+ - api: ensure all resources can be filtered
+ - api: make all PropertyMappings filterable by multiple managed attributes
+ - core: add API to directly send recovery link to user
+ - core: add UserSelfSerializer and separate method for users to update themselves with limited fields
+ - core: allow changing of groups a user is in from user api
+ - flows: fix unhandled error in stage execution not being logged as SYSTEM_EXCEPTION event
+ - lifecycle: decrease default worker count on compose
+ - providers/proxy: don't create ingress when no hosts are defined
+ - web: add API Drawer
+ - web/admin: add UI to copy invitation link
+ - web/admin: allow modification of users groups from user view
+ - web/admin: re-name service connection to integration
 
 ## Upgrading