Upgrade grape gem
What does this MR do and why?
This adds support for Rack 3. Grape keeps backward compatibility with Rack 2 so no changes are needed.
Links:
- https://github.com/ruby-grape/grape/blob/master/CHANGELOG.md#200-20231111
- https://github.com/ruby-grape/grape/blob/master/UPGRADING.md#upgrading-to--200
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Related to #396273
Edited by Heinrich Lee Yu