automation: Update matrix-synapse to version 1.61.0

This MR contains the following updates:

Package	Update	Change
matrix-synapse	minor	1.60.0 -> 1.61.0

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Release Notes

matrix-org/synapse

v1.61.0

Compare Source

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This release removes support for the non-standard feature known both as 'groups' and as 'communities', which have been superseded by Spaces.

See the upgrade notes for more details.

Improved Documentation

• Mention removed community/group worker endpoints in the upgrade notes. Contributed by @​olmari. (#​13023)

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