I now get the following warning under CiviCRM Status:
Future versions of CiviCRM may require MySQL utf8mb4 support. It is recommended, though not yet required, to configure your MySQL server for utf8mb4 support...
Currently our database uses the collation utf8_unicode_ci for all CiviCRM tables. I can change the collation easily in phpMyAdmin. There are a number of utf8mb4... collations available. I was thinking of just switching to utf8mb4_unicode_ci. Is that the correct thing to do? Will it make the system status warning go away? Should I put our website in maintenance mode for the switch? Thanks for any advice. I don't do much with MySQL details like this and any hand-holding is appreciated ;)