Log Message:
chat/matrix-synapse: Update to 1.20.0

Upstream NEWS:

Synapse 1.120.0 (2024-11-26)

This release enables the enforcement of authenticated media by default, with \ 
exemptions for media that is already present in the
homeserver's media store.

Most homeservers operating in the public federation will not be impacted by this \ 
change, given that
the large homeserver matrix.org enabled this in September 2024 and therefore \ 
most clients and servers
will already have updated as a result.

Some server administrators may still wish to disable this enforcement for the \ 
time being, in the interest of compatibility with older clients
and older federated homeservers.
See the upgrade notes for more information.

Synapse 1.119.0 (2024-11-13)

    Support MSC4151's stable report room API. (#17374)
    Add experimental support for MSC4222 (Adding state_after to sync v2). (#17888)

Synapse 1.118.0 (2024-10-29)

    Added the display_name_claim option to the JWT configuration. This option \ 
allows specifying the claim key that contains the user's display name in the JWT \ 
payload. (#17708)
    Implement MSC4210: Remove legacy mentions. Contributed by @tulir @ Beeper. \ 
(#17783)

Synapse 1.117.0 (2024-10-15)

    Add config option redis.password_path. (#17717)

Synapse 1.116.0 (2024-10-01)

    Add implementation of restricting who can overwrite a state event as \ 
proposed by MSC3757. (#17513)

Synapse 1.115.0 (2024-09-17)

    Improve cross-signing upload when using MSC3861 to use a custom UIA flow \ 
stage, with web fallback support. (#17509)