Fixed missing migration to dedicated deprecator

[soartec-lab]

This is a follow-up to the PR below:

• https://github.com/heartcombo/devise/pull/5583
• https://github.com/heartcombo/devise/pull/5598

rails has deprecated the use of ActiveSupport::Deprecation in singleton in this PR, so devise has defined its own Deprecator in response to this, but there was an omission in the correction. So I fixed it.

Please note that a PR has been created that will discontinue support for EOL rails versions, and the files modified this time may also be deleted.

https://github.com/heartcombo/devise/pull/5600

[soartec-lab]

I think the failing tests will be fixed in https://github.com/heartcombo/devise/pull/5622

[carlosantoniodasilva]

Thanks!