Bump rack-mini-profiler from 2.3.3 to 2.3.4

Bumps [rack-mini-profiler](https://github.com/MiniProfiler/rack-mini-profiler) from 2.3.3 to 2.3.4.
- [Release notes](https://github.com/MiniProfiler/rack-mini-profiler/releases)
- [Changelog](https://github.com/MiniProfiler/rack-mini-profiler/blob/master/CHANGELOG.md)
- [Commits](https://github.com/MiniProfiler/rack-mini-profiler/compare/v2.3.3...v2.3.4)

---
updated-dependencies:
- dependency-name: rack-mini-profiler
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -326,7 +326,7 @@ GEM
       activesupport (>= 3.0.0)
     racc (1.6.0)
     rack (2.2.3)
-    rack-mini-profiler (2.3.3)
+    rack-mini-profiler (2.3.4)
       rack (>= 1.2.0)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)