Update rspec-rails requirement from ~> 6.0 to ~> 7.1

Updates the requirements on [rspec-rails](https://github.com/rspec/rspec-rails) to permit the latest version.
- [Changelog](https://github.com/rspec/rspec-rails/blob/main/Changelog.md)
- [Commits](rspec/rspec-rails@v6.0.0...v7.1.0)

---
updated-dependencies:
- dependency-name: rspec-rails
  dependency-type: direct:production
...

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

Gemfile

@@ -4,7 +4,7 @@ gemspec
 
 gem 'rails', '~> 8.0.0'
 gem 'rspec'
-gem 'rspec-rails', '~> 6.0'
+gem 'rspec-rails', '~> 7.1'
 gem 'sqlite3', '~> 2.0'
 gem 'byebug'
 gem 'appraisal'