chore(deps): bump rack (#4523)

Bumps [rack](https://github.com/rack/rack) from 3.1.16 to 3.1.18.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.1.16...v3.1.18)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.1.18
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

examples/language-sdk-instrumentation/ruby/rideshare/Gemfile.lock

@@ -74,7 +74,7 @@ GEM
     pyroscope-otel (0.1.4)
       opentelemetry-api (~> 1.1)
       pyroscope (>= 0.5.1, < 1.0)
-    rack (3.1.16)
+    rack (3.1.18)
     rack-protection (4.1.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)