Bump rack-mini-profiler from 2.3.3 to 3.0.0 in /backend

Bumps [rack-mini-profiler](https://github.com/MiniProfiler/rack-mini-profiler) from 2.3.3 to 3.0.0.
- [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@v2.3.3...v3.0.0)

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

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

Author: dependabot[bot]

backend/Gemfile

@@ -41,7 +41,7 @@ group :development do
   gem 'web-console', '>= 4.1.0'
   # Display performance information such as SQL time and flame graphs for each request in your browser.
   # Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md
-  gem 'rack-mini-profiler', '~> 2.3'
+  gem 'rack-mini-profiler', '~> 3.0'
   gem 'listen', '~> 3.7'
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'

backend/Gemfile.lock

@@ -115,7 +115,7 @@ GEM
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
-    rack-mini-profiler (2.3.3)
+    rack-mini-profiler (3.0.0)
       rack (>= 1.2.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -201,7 +201,7 @@ DEPENDENCIES
   pg (>= 0.18, < 2.0)
   puma (~> 5.6)
   rack-cors
-  rack-mini-profiler (~> 2.3)
+  rack-mini-profiler (~> 3.0)
   rails (~> 6.1.5)
   route_mechanic
   selenium-webdriver