Run pyupgrade for python 3.7 & 3.8. (#16110)

changelog.d/16110.misc

contrib/cmdclient/console.py

docker/configure_workers_and_start.py

docker/start.py

scripts-dev/build_debian_packages.py

scripts-dev/check_schema_delta.py

scripts-dev/federation_client.py

scripts-dev/release.py

scripts-dev/sign_json.py

synapse/__init__.py

synapse/_scripts/synapse_port_db.py

synapse/_scripts/update_synapse_database.py

synapse/api/constants.py

synapse/handlers/presence.py

synapse/handlers/sso.py

synapse/handlers/stats.py

synapse/handlers/sync.py

synapse/logging/_remote.py

synapse/module_api/callbacks/spamchecker_callbacks.py

synapse/replication/tcp/handler.py