Upgrade Synapse (1.46.0 -> 1.47.0)

We had to remove UID/GID environment variables that we used to pass
to the Synapse container, because it was causing a problem after
https://github.com/matrix-org/synapse/pull/11209

We were using both `--user` and UID/GID environment variables until now.

roles/matrix-synapse/tasks/synapse/setup_install.yml

@@ -67,8 +67,6 @@
     --user={{ matrix_user_uid }}:{{ matrix_user_gid }}
     --cap-drop=ALL
     --mount type=bind,src={{ matrix_synapse_config_dir_path }},dst=/data
-    -e UID={{ matrix_user_uid }}
-    -e GID={{ matrix_user_gid }}
     -e SYNAPSE_CONFIG_PATH=/data/homeserver.yaml
     -e SYNAPSE_SERVER_NAME={{ matrix_server_fqn_matrix }}
     -e SYNAPSE_REPORT_STATS=no