Bump rack-mini-profiler from 2.2.0 to 3.3.1

Bumps [rack-mini-profiler](https://github.com/MiniProfiler/rack-mini-profiler) from 2.2.0 to 3.3.1.
- [Release notes](https://github.com/MiniProfiler/rack-mini-profiler/releases)
- [Changelog](https://github.com/MiniProfiler/rack-mini-profiler/blob/master/CHANGELOG.md)
- [Commits](MiniProfiler/rack-mini-profiler@v2.2.0...v3.3.1)

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

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

Gemfile.lock

@@ -368,7 +368,7 @@ GEM
       rack (>= 2.0.0)
     rack-livereload (0.3.17)
       rack
-    rack-mini-profiler (2.2.0)
+    rack-mini-profiler (3.3.1)
       rack (>= 1.2.0)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)