Update rails-i18n from 6.0.0 to 7.0.3

What does this MR do and why?

Updates rails-i18n gem from 6.0.0 (supporting for Rails 6.0 and 6.1) to 7.0.3 (Rails 6.0, 6.1, 7.0, and upcoming 7.x)

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Related to #365720 (closed) (part of &7875 (closed))