What does this MR do and why?
The source install and upgrade documentation still refers to Ruby 2.7.5, but the current upstream release is 2.7.6, which fixes "CVE-2022-28739: Buffer overrun in String-to-Float conversion".
How to set up and validate locally
- Install Ruby 2.7.6 according to source install docs
- Restart GitLab## MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
I have evaluated the MR acceptance checklist for this MR.