* commit '43726783e': (22 commits)
1.17.0rc1
Fix some spelling mistakes / typos. (#7811)
`update_membership` declaration: now always returns an event id. (#7809)
Improve stacktraces from exceptions in background processes (#7808)
Fix `can only concatenate list (not "tuple") to list` exception (#7810)
Pass original request headers from workers to the main process. (#7797)
Generate real events when we reject invites (#7804)
Add `HomeServer.signing_key` property (#7805)
Revert "Update the installation docs on apt-transport-https (#7801)"
Do not use simplejson in Synapse. (#7800)
Stop passing bytes when dumping JSON (#7799)
Update the installation docs on apt-transport-https (#7801)
shuffle changelog slightly
Change Caddy links (old is deprecated) (#7789)
Stop populating unused table `local_invites`. (#7793)
Refactor getting replication updates from database v2. (#7740)
Add libwebp dependency to Dockerfile (#7791)
Add documentation for JWT login type and improve sample config. (#7776)
Convert the appservice handler to async/await. (#7775)
Don't ignore `set_tweak` actions with no explicit `value`. (#7766)
...
* commit 'd31f69afa':
clean up buildkite output
Don't restrict the tests to v1 rooms
Fix worker mode
Fix 3PID invite exchange
Lint again
Lint again
Lint
Don't apply retention policy based filtering on state events
Implement per-room message retention policies
