Draft: Update grape gem to 2.3.0

What does this MR do and why?

As per Update dependency grape to '~> 2.3.0' (#491188), we should update the grape gem. This MR updates https://github.com/ruby-grape/grape gem to the latest version 2.3.0.

Follows-up from: Upgrade grape gem to 2.2.0 (!185996 - merged)

Changes:

https://my.diffend.io/gems/grape/2.2.0/2.3.0

References

• Update dependency grape to '~> 2.3.0' (#491188)

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