chat/matrix-synapse: Update to 1.57.0

Upstream NEWS, less bugfixes and minor improvements:

* Synapse 1.57.0 (2022-04-19)

  This version includes a change to the way transaction IDs are managed
  for application services. If your deployment uses a dedicated worker
  for application service traffic, it must be stopped when the database
  is upgraded (which normally happens when the main process is
  upgraded), to ensure the change is made safely without any risk of
  reusing transaction IDs.

* Synapse 1.57.0rc1 (2022-04-12)

** Features

    Add a module callback to react to new 3PID (email address, phone number) associations. (#12302)
    Add a configuration option to remove a specific set of rooms from sync responses. (#12310)
    Add a module callback to react to account data changes. (#12327)
    Allow setting user admin status using the module API. Contributed by Famedly. (#12341)
    Update /messages to use historic pagination tokens if no from query parameter is given. (#12370)
    Add a module API for reading and writing global account data. (#12391)
    Support the stable v1 endpoint for /relations, per MSC2675. (#12403)
    Include bundled aggregations in search results. (MSC3666). (#12436)

** Deprecations and Removals

    Remove the unused and unstable /aggregations endpoint which was removed from MSC2675. (#12293)

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