Merge remote-tracking branch 'upstream/release-v1.85'

.github/workflows/dependabot_changelog.yml

.github/workflows/tests.yml

CHANGES.md

Cargo.lock

debian/changelog

docs/admin_api/user_admin_api.md

docs/development/contributing_guide.md

docs/development/dependencies.md

docs/modules/password_auth_provider_callbacks.md

docs/replication.md

docs/sample_log_config.yaml

...ation/monitoring/reporting_homeserver_usage_statistics.md

docs/usage/configuration/config_documentation.md

flake.nix

mypy.ini

poetry.lock

pyproject.toml

requirements.txt

scripts-dev/mypy_synapse_plugin.py

scripts-dev/release.py