Bump rack from 3.0.9 to 3.0.10 in /example

Bumps [rack](https://github.com/rack/rack) from 3.0.9 to 3.0.10.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.0.9...v3.0.10)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

example/Gemfile.lock

@@ -134,7 +134,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (3.0.9)
+    rack (3.0.10)
     rack-proxy (0.7.7)
       rack
     rack-session (2.0.0)