Added log line before updating user statuses

- this makes it obvious where we are in the flow and its clear we're
  inside this migration if we see that log line

core/server/data/migrations/versions/5.0/2022-05-09-14-17-cleanup-invalid-users-status.js

@@ -3,6 +3,8 @@ const {createTransactionalMigration} = require('../../utils');
 
 module.exports = createTransactionalMigration(
     async function up(knex) {
+        logging.info(`Updating users with invalid statuses to 'inactive'`);
+
         const affectedRows = await knex('users')
             .update('status', 'inactive')
             .whereNotIn('status', ['active', 'inactive', 'locked', 'warn-1', 'warn-2', 'warn-3', 'warn-4']);