Update docker.io/matrixdotorg/synapse Docker tag to v1.84.1

This MR contains the following updates:

Package	Update	Change
docker.io/matrixdotorg/synapse	patch	v1.84.0 -> v1.84.1

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Release Notes

matrix-org/synapse

v1.84.1

Compare Source

Synapse 1.84.1 (2023-05-26)

This patch release fixes a major issue with homeservers that do not have an instance_map defined but which do use workers. If you have already upgraded to Synapse 1.84.0 and your homeserver is working normally, then there is no need to update to this patch release.

Bugfixes

• Fix a bug introduced in Synapse v1.84.0 where workers do not start up when no instance_map was provided. (#​15672)

Internal Changes

• Add dch and notify-send to the development Nix flake so that the release script can be used. (#​15673)

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