Bump puma from 4.3.11 to 4.3.12 in /examples/simple_rails_api

Bumps [puma](https://github.com/puma/puma) from 4.3.11 to 4.3.12.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v4.3.11...v4.3.12)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/simple_rails_api/Gemfile.lock

@@ -86,7 +86,7 @@ GEM
     nokogiri (1.13.4)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    puma (4.3.11)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)