This MR contains the following updates:

Package	Update	Change
docker.io/matrixdotorg/synapse	minor	`v1.74.0` -> `v1.75.0`

matrix-org/synapse

Synapse 1.75.0 (2023-01-17)

No significant changes since 1.75.0rc2.

Synapse 1.75.0rc2 (2023-01-12)

Fix a bug introduced in Synapse 1.75.0rc1 where device lists could be miscalculated with some sync filters. (#14810)
Fix race where calling /members or /state with an at parameter could fail for newly created rooms, when using multiple workers. (#14817)

Add a cached function to synapse.module_api that returns a decorator to cache return values of functions. (#14663)
Add experimental support for MSC3391 (removing account data). (#14714)
Support RFC7636 Proof Key for Code Exchange for OAuth single sign-on. (#14750)
Support non-OpenID compliant userinfo claims for subject and picture. (#14753)
Improve performance of /sync when filtering all rooms, message types, or senders. (#14786)
Improve performance of the /hierarchy endpoint. (#14263)

Fix the MAU Limits section of the Grafana dashboard relying on a specific job name for the workers of a Synapse deployment. (#14644)
Fix a bug introduced in Synapse 1.70.0 which could cause spurious UNIQUE constraint failed errors in the rotate_notifs background job. (#14669)
Ensure stream IDs are always updated after caches get invalidated with workers. Contributed by Nick @ Beeper (@fizzadar). (#14723)
Remove the unspecced device field from /pushrules responses. (#14727)
Fix a bug introduced in Synapse 1.73.0 where the picture_claim configured under oidc_providers was unused (the default value of "picture" was used instead). (#14751)
Unescape HTML entities in URL preview titles making use of oEmbed responses. (#14781)
Disable sending confirmation email when 3pid is disabled. (#14725)

Declare support for Python 3.11. (#14673)
Fix target_memory_usage being used in the description for the actual cache_autotune sub-option target_cache_memory_usage. (#14674)
Move email to Server section in config file documentation. (#14730)
Fix broken links in the Synapse documentation. (#14744)
Add missing worker settings to shared configuration documentation. (#14748)
Document using Twitter as a OAuth 2.0 authentication provider. (#14778)
Fix Synapse 1.74 upgrade notes to correctly explain how to install pyICU when installing Synapse from PyPI. (#14797)
Update link to towncrier in contribution guide. (#14801)
Use htmltest to check links in the Synapse documentation. (#14743)

Faster remote room joins: stream the un-partial-stating of events over replication. (#14545, #14546)
Use ruff instead of flake8. (#14633, #14741)
Change handle_new_client_event signature so that a 429 does not reach clients on PartialStateConflictError, and internally retry when needed instead. (#14665)
Remove dependency on jQuery on reCAPTCHA page. (#14672)
Faster joins: make compute_state_after_events consistent with other state-fetching functions that take a StateFilter. (#14676)
Add missing type hints. (#14680, #14681, #14687)
Improve type annotations for the helper methods on a CachedFunction. (#14685)
Check that the SQLite database file exists before porting to PostgreSQL. (#14692)
Add .direnv/ directory to .gitignore to prevent local state generated by the direnv development tool from being committed. (#14707)
Batch up replication requests to request the resyncing of remote users's devices. (#14716)
If debug logging is enabled, log the msgids of any to-device messages that are returned over /sync. (#14724)
Change GHA CI job to follow best practices. (#14772)
Switch to our fork of dh-virtualenv to work around an upstream Python 3.11 incompatibility. (#14774)
Skip testing built wheels for PyPy 3.7 on Linux x86_64 as we lack new required dependencies in the build environment. (#14802)

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