website/docs: add 2021.12.1-rc3

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

website/docs/releases/v2021.12.md

@@ -86,6 +86,23 @@ This release does not have any headline features, and mostly fixes bugs.
 - web/flows: fix linting errors
 - web/flows: Revise duo authenticator login prompt text (#1872)
 
+## Fixed in 2021.12.1-rc3
+
+- core: add FlowToken which saves the pickled flow plan, replace standard token in email stage to allow finishing flows in different sessions
+- core: fix missing permission check for group creating when creating service account
+- outposts/ldap: Fix search case sensitivity. (#1897)
+- policies/expression: add ak_call_policy
+- providers/saml: add ?force_binding to limit bindings for metadata endpoint
+- root: add request_id to celery tasks, prefixed with "task-"
+- sources/*: Allow creation of source connections via API
+- stages/prompt: use policyenginemode all
+- tests/e2e: add post binding test
+- web: fix duplicate classes, make generic icon clickable
+- web: fix text colour for bad request on light mode
+- web/admin: show outpost warning on application page too
+- web/elements: close dropdown when refresh event is dispatched
+- web/user: allow custom font-awesome icons for applications
+
 ## Upgrading
 
 This release does not introduce any new requirements.