* commit '31acc5c30':
Escape the error description on the sso_error template. (#8405)
Fix occasional "Re-starting finished log context" from keyring (#8398)
Allow existing users to login via OpenID Connect. (#8345)
Fix schema delta for servers that have not backfilled (#8396)
Fix MultiWriteIdGenerator's handling of restarts. (#8374)
s/URLs/variables in changelog
s/accidentally/incorrectly in changelog
Update changelog wording
Add type annotations to SimpleHttpClient (#8372)
Add new sequences to port DB script (#8387)
Add EventStreamPosition type (#8388)
Mark the shadow_banned column as boolean in synapse_port_db. (#8386)