Update `rack-timeout` to `0.5.2`

What does this MR do?

Update rack-timeout to 0.5.2: https://github.com/sharpstone/rack-timeout/compare/v0.5.1..v0.5.2

This is pretty minor bump, but it additionally resolves the #219623 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content