Bump better_errors from 2.5.1 to 2.6.0 (#13340)

Bumps [better_errors](https://github.com/BetterErrors/better_errors) from 2.5.1 to 2.6.0.
- [Release notes](https://github.com/BetterErrors/better_errors/releases)
- [Commits](https://github.com/BetterErrors/better_errors/compare/v2.5.1...v2.6.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile

@@ -132,7 +132,7 @@ end
 group :development do
   gem 'active_record_query_trace', '~> 1.7'
   gem 'annotate', '~> 3.0'
-  gem 'better_errors', '~> 2.5'
+  gem 'better_errors', '~> 2.6'
   gem 'binding_of_caller', '~> 0.7'
   gem 'bullet', '~> 6.1'
   gem 'letter_opener', '~> 1.7'