docs: add changelog for 2021.3.4

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

website/docs/releases/2021.3.md

@@ -55,6 +55,31 @@ title: Release 2021.3
 - web: fix Source icons not being displayed on firefox
 - web: fix styling for static token list
 
+## Fixed in 2021.3.4
+
+- admin: include git build hash in gh-* tags and show build hash in admin overview
+- events: don't fail on boot when geoip can't be opened
+- helm: add initial geoip
+- outposts: improve logs for outpost connection
+- policies: fix error when clearing policy cache when no policies are cached
+- root: add comment for error reporting to compose
+- root: add geoip config to docker-compose
+- sources/oauth: fix error on user enrollment when no enrollment flow is defined
+- web: add close button to messages
+- web: backport fix: add missing background filter
+- web: fix outpost health display
+- web: fix path for fallback flow view
+- web: fix system task index
+- web: improve compatibility with password managers
+- web: improve layout of expanded event info
+- web: improve styling for application list
+- web: prevent duplicate messages
+- web: show related edit button for bound stages and policies
+- web: use chunking for vendor and api
+- web: use loadingState for autosubmitStage
+- web: use sections in sidebar, adjust colouring
+
+
 ## Upgrading
 
 This release does not introduce any new requirements.