AO3-6647 Upgrade Ruby to 3.1.4

[zz9pzza]

Pull Request Checklist

• Have you read "How to write the perfect pull request"?
• Have you read the contributing guidelines?
• Have you added tests for any changed functionality?
• Have you added the Jira issue number
  as the first thing in your pull request title (e.g. AO3-1234 Fix thing)
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  until they are reviewed and merged before creating new pull requests.

Issue

https://otwarchive.atlassian.net/browse/AO3-6647

Purpose

Change the version of ruby that the Archive uses.

Testing Instructions

I would do a smoke test

References

Are there other relevant issues/pull requests/mailing list discussions?

Credit

He/Him

[zz9pzza]

Need to check
WARNING: The monkeypatch /otwa/config/initializers/monkeypatches/mail_disable_starttls.rb was written for version 2.7.1 of the mail gem, but you are running 2.8.1. Please update or remove the monkeypatch.

[Bilka2]

It may be good to update the parser gem to at least v3.2.2.0 to support ruby 3.1.4.

[Bilka2]

The upgraded parser gem is missing from the commit. Rest looks good.