Merge branch 'master' into develop

changelog.d/12884.misc

-Use constants for EDU types.

changelog.d/12885.misc

-Reduce database load of `/sync` when presence is enabled.

changelog.d/12886.misc

-Refactor `have_seen_events` to reduce memory consumed when processing federation traffic.

changelog.d/12888.misc

-Refactor receipt linearization code.

changelog.d/12889.bugfix

-Fix a bug introduced in Synapse 1.59.0 which caused room deletion to fail with a foreign key violation.

changelog.d/12894.misc

-Add type annotations to `synapse.logging.opentracing`.

changelog.d/12895.removal

-Remove support for the non-standard groups/communities feature from Synapse.

changelog.d/12897.removal

-Remove support for the non-standard groups/communities feature from Synapse.

changelog.d/12899.removal

-Remove support for the non-standard groups/communities feature from Synapse.

changelog.d/12900.removal

-Remove support for the non-standard groups/communities feature from Synapse.

changelog.d/12902.misc

-Remove PyNaCl occurrences directly used in Synapse code.
\ No newline at end of file

changelog.d/12903.bugfix

-Fix a long-standing bug which caused the `/messages` endpoint to return an incorrect `end` attribute when there were no more events. Contributed by @Vetchu.

changelog.d/12904.misc

-Pull out less state when handling gaps in room DAG.

changelog.d/12905.bugfix

-Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was a redaction of an event that has since been purged.

changelog.d/12908.removal

-Remove contributed `kick_users.py` script. This is broken under Python 3, and is not added to the environment when `pip install`ing Synapse.

changelog.d/12909.removal

-Remove `contrib/jitsimeetbridge`. This was an unused experiment that hasn't been meaningfully changed since 2014.

changelog.d/12910.removal

-Remove unused `contrib/experiements/cursesio.py` script, which fails to run under Python 3.

changelog.d/12911.removal

-Remove unused `contrib/experiements/test_messaging.py` script. This fails to run on Python 3.

changelog.d/12912.misc

-Bump types-jsonschema from 4.4.1 to 4.4.6.

changelog.d/12913.misc

-Rename storage classes.