Fixes #35758 - Allow latest Rails 6.1

[ehelms]

No description provided.

[ekohl]

ActiveRecord::ConnectionTimeoutError: could not obtain a connection from the pool within 5.000 seconds (waited 5.004 seconds); all pooled connections were in use
    test/test_helper.rb:68:in `before_setup'

I think I've seen this in more places. I wonder if it's the event daemon that eats up additional DB connections.