automation: Update matrix-synapse Docker tag to v1.95.0

This MR contains the following updates:

Package	Update	Change
matrix-synapse	minor	1.94.0 -> 1.95.0

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Release Notes

matrix-org/synapse

v1.95.0

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Internal Changes

• Build Debian packages for Ubuntu 23.10 Mantic Minotaur. (#​16524)

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