Bump rack-mini-profiler from 2.0.3 to 2.0.4

Bumps [rack-mini-profiler](https://github.com/MiniProfiler/rack-mini-profiler) from 2.0.3 to 2.0.4.
- [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/v2.0.3...v2.0.4)

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

Gemfile.lock

@@ -229,7 +229,7 @@ GEM
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     rack (2.2.3)
-    rack-mini-profiler (2.0.3)
+    rack-mini-profiler (2.0.4)
       rack (>= 1.2.0)
     rack-proxy (0.6.5)
       rack