matrix: Make Mjolnir less verbose

roles/matrix/templates/mjolnir.yaml.j2

@@ -41,7 +41,7 @@ recordIgnoredInvites: true
 managementRoom: "#mjolnir:archlinux.org"
 
 # Set to false to make the management room a bit quieter.
-verboseLogging: true
+verboseLogging: false
 
 # The log level for the logs themselves. One of DEBUG, INFO, WARN, and ERROR.
 # This should be at INFO or DEBUG in order to get support for Mjolnir problems.